• The Andean altiplano has long been a focus of research into high-altitude adaptation for a number of reasons including relative accessibility, the large numbers of altitude-adapted species that thrive there, the presence of large indigenous human populations and the early involvement in the field by such eminent Latin American biologists as Carlos Monge M., his son Carlos Monge C. and Alberto Hurtado. (silverchair.com)
  • Major disparities in rates of iGAS exist among these Indigenous populations is more sparse between Indigenous and non-Indigenous populations of than it is in other industrialized nations ( 6 ). (cdc.gov)
  • For example, Utah populations can provide insight for an explana- reported an iGAS incidence significantly higher than tory model for iGAS among Indigenous persons country averages for 2002-2010: 6.3 cases/100,000 in the United States. (cdc.gov)
  • To date, cases have been identified only in the indigenous peoples of Athabascan Native American heritage, specifically, those of the Navajo and Apache tribes. (eyewiki.org)
  • The first amendment is in the seventh preambular paragraph, which is at the top of page 2 in the English version of the Conference paper and I will read it as amended: "Recognizing that the rates of tuberculosis are disproportionately high in high-risk populations, including indigenous populations. (who.int)
  • Following their arrival to the Americas, ancestral Native Americans diversified into two basal genetic branches around 13 KYA, one that is now dispersed across North and South America and the other is restricted to North America. (dna-explained.com)
  • In this case, the researchers found that the spread of a bee species in pre-Columbian Central and North America was tied to the spread of Native American agriculture. (ncsu.edu)
  • Here, we compared the germination patterns between native (North America) and introduced (China) populations of Plantago virginica for four consecutive years to examine whether there has been adaptive differentiation in germination traits and how these traits are related to local climatic conditions. (pensoft.net)
  • The white-footed mouse ( Peromyscus leucopus ) is a rodent native to North America from Ontario , Quebec , Labrador , and the Maritime Provinces (excluding the island of Newfoundland ) to the southwestern United States and Mexico. (wikipedia.org)
  • The species is suffering from having highly fragmented populations, with gene exchange between these groups being difficult, and the prospect of suffering a genetic bottleneck looking to be a only a matter of time. (edgeofexistence.org)
  • Our findings suggest that polygyny in these Vespula species is not solely the product of a genetic or population bottleneck resulting from introduction, but rather some undetermined environmental effects. (georgiasouthern.edu)
  • The takhi would be the first species or subspecies to return to portions of its native habitat after so long in captivity-between 10 and 14 generations-with no new genetic input. (amnh.org)
  • Green crabs can compete with native species, rip up eelgrass 'nurseries', and eat small shellfish before they have a chance to be harvested. (sflorg.com)
  • Second, it suggests that high gene flow in a widespread species' native range may generate evolutionary mechanisms, like this one, which provide that species with the substrate for rapid adaptive change as it spreads across new environments," Tepolt explained. (sflorg.com)
  • During that time, 14 different prey species' populations increased. (ipl.org)
  • Xu X, Wolfe L, Diez J, Zheng Y, Guo H, Hu S (2019) Differential germination strategies of native and introduced populations of the invasive species Plantago virginica . (pensoft.net)
  • Similar to interspecific comparisons, examining the differentiation in germination patterns of an invasive species between its native and introduced ranges can also provide insights into the ecological and evolutionary mechanisms of invasion. (pensoft.net)
  • In New Zealand, Kakapo parrots ( Strigops habroptilus ), which had lived isolated on the islands for at least 10,000 years, became endangered after the arrival of non-native species brought to the islands by humans. (eurasiareview.com)
  • Reviewing Cavalli-Sforza's 2000 book Genes, Peoples, and Languages in The New York Review of Books , Jared Diamond praised the Stanford researcher for "demolishing scientists' attempts to classify human populations into races in the same way that they classify birds and other species into races. (stanford.edu)
  • By understanding how weasel habitat preferences vary according to regional climate differences as well as seasonal fluctuations in prey populations can further our appreciation for this species' ecology and evolutionary success. (wwnature.com)
  • Black-footed ferrets (Mustela nigripes), North America's most endangered mammal species, are recovering in their native Wyoming, reports a study published in the current issue of the journal Science . (mongabay.com)
  • Although some attempts may not yield immediate success, the Shirley Basin example shows that species recovery is possible, given the ferret's capacity to persist at low population levels and to increase rapidly in favorable environments," the authors write, adding that survival of young ferrets is critical to the population health of the species. (mongabay.com)
  • S-1 Presidential Executive Order 12898, â Federal Actions to Address Environmental Justice in Minority Populations and Low-Income Populations,â directs federal agencies to identify and address the disproportionately high and adverse human health or environmental effects of their programs, policies, and activities on minority and low-income populations. (nationalacademies.org)
  • Minority Populations,'' presented the the three most recent years and by race for each state. (cdc.gov)
  • Lawson R., Kofron C.P., Dessauer H.C., Alloenzyme variation in natural populations of Nile crocodile, Am. Zool. (gse-journal.org)
  • How invasive populations survive and thrive in a newly occupied environment and how, in many cases, they maintain moderate levels of heterozygosity are still contentious issues. (authorea.com)
  • We observe a drastic loss of mitochondrial polymorphisms in invasive populations, whereas nuclear heterozygosity exhibits a mild reduction. (authorea.com)
  • This result supports that balancing selection increased heterozygosity by facilitating the admixture of invasive populations from distinct origins and that, once heterozygosity was sufficiently high, the FAW started spreading globally in the Eastern hemisphere. (authorea.com)
  • On the contrary, the green crab - like many successful invasive populations - has low genetic diversity, while still spreading rapidly in a new part of the world. (sflorg.com)
  • His research group studies the genetics, evolution, conservation, population biology and systematics of a diverse array of marine organisms. (stanford.edu)
  • Thus, this review is a retrospective analysis based on concrete evidence generated from studies undertaken to map the evolution of population in the Indian context. (srjhs.org)
  • I am a post-doctoral researcher in Ivana Gudelj's research group where we use a combination of mathematical modelling, synthetic biology, and eco-evolutionary lab experiments to study how microbial interactions influence the evolution of cooperation, population diversity and disease processes. (exeter.ac.uk)
  • [16] The differential evolution of metabolic processes in urban P. leucopus populations is thought to contribute to their success and survival in NYC urban forests. (wikipedia.org)
  • Nei M., Maruyama T., Chakraborty R., The bottleneck effect and genetic variability in populations, Evolution 29 (1975) 1-10. (gse-journal.org)
  • These results indicate that admixture must be considered when clinical epidemiology or case control genetic analyses are studied in this population. (blogspot.com)
  • In addition, the large variance in admixture proportions in individual Argentine subjects shown by this study suggests that this population is appropriate for future admixture mapping studies. (blogspot.com)
  • Putative 'Paleoamerican' relict populations, including the historical Mexican Pericúes and South American Fuego-Patagonians, are not directly related to modern Australo-Melanesians as suggested by the Paleoamerican Model. (dna-explained.com)
  • Looking for changes in putative adaptations in vertically migrant populations, determining the heritability of putative adaptive traits and genetic association analyses have all been used to evaluate the relative contributions of nurture and nature to the Andean phenotype. (silverchair.com)
  • Populations like these are well established in genomics research for GWAS and searching for Mendelian traits. (bridgeinformatics.com)
  • A population with high genetic diversity is more likely to include individuals with a wide range of different traits. (sflorg.com)
  • The researchers, led by Martin Grenier of the University of Wyoming in Laramie, say the population recovery is notable "because the bottleneck of the 1980s reduced genetic variability and captive breeding affected various phenotypic traits. (mongabay.com)
  • In human population genetics, Y-Chromosome haplogroups define the major lineages of direct paternal (male) lines back to a shared common ancestor in Africa. (unionpedia.org)
  • Kimura M., Crow J.F., The number of alleles that can be maintained in a finite population, Genetics 49 (1964) 725-738. (gse-journal.org)
  • May B., Krueger C.C., Eng C., Paul E., GENES IN POPULATIONS version 2.0: A Computer Program for Analysis of Genetic Data, Cornell Laboratory for Ecological and Evolutionary Genetics, Cornell University, New York, 1995. (gse-journal.org)
  • Raymond M., Rousset F., GENEPOP version 1.2: Population genetics software for exact tests and ecumenicism, J. Hered. (gse-journal.org)
  • Impact of habitat fragmentation on Indri lemur populations in Madagascar rainforests. (edgeofexistence.org)
  • Exam 70-703 Book, Trapping in suitable habitat along the south coast since that time has found no other populations of Gilbert's potoroo and only 30 to 40 animals in the Mt Gardner population, meaning they are critically endangered [1]. (utistop.co.uk)
  • We explored if habitat-specific regulation across the principal stages of the urchin life cycle could help explain the persistence of these populations in connected mosaics. (csic.es)
  • Our results show that habitat-specific regulation is critical in determining urchin populations: each habitat limited urchin sub-populations at different life stages. (csic.es)
  • The fact that population regulation is clearly habitat-specific suggests that sea urchin populations may be significantly buffered from bottlenecks in mixed seascapes where both habitats co-occur. (csic.es)
  • Sea urchin populations can therefore persist across the seascape despite strong habitat-specific regulation either by maintaining reproductive output in one habitat or by migrating between them. (csic.es)
  • In general, all the predators and prey (regardless of habitat) began with the same amount of population. (ipl.org)
  • For instance, there are a total of six predators (2 had forks, 2 had spoons, and 2 had knives)-regardless of habitat, Meaning each predator contributed to 33% of the population (Tables 1A, 2A). (ipl.org)
  • In the dirt habitat, the population of fork and knifes began to decrease while the population of spoons began to increase. (ipl.org)
  • As for predators in the dirt habitat, the population of pinto bean decreased during the second generation, while the populations of black beans, green beans and white beans slightly increased. (ipl.org)
  • As for prey in the grass habitat, in the second generation, black beans accounted for 16.58% of the population while, green beans accounted for 27.69%, white beans accounted for 29.35% and pinto beans accounted for 26.37% of the population (Table 2B). (ipl.org)
  • More than 220 captive-born ferrets were reintroduced into their natural habitat between 1991 and 1994, but disease reduced the population to five by 1997. (mongabay.com)
  • This study was determined the efficiency of microsatellite markers for conservation plans and breeding strategies in Caspian horse population. (caspianhorse.org)
  • The aim of this study was to evaluate genetic characterization of the Caspian horse population using microsatellite markers. (caspianhorse.org)
  • As the evidence for a genetic contribution to high-altitude adaptation in humans has been the subject of several recent reviews, this article instead focuses on the methodology that has been employed to isolate the effects of 'nature' from those of 'nurture' on the acquisition of the high-altitude phenotype in Andean natives (Quechua and Aymara). (silverchair.com)
  • Weasels den near active rodent populations or in abandoned burrows that they enlarge themselves for the purpose of nesting. (wwnature.com)
  • In two populations erroneous allele calls were corrected: Taraz (Kazakhstan) and Andalucia/Extremadura (Spain). (blogspot.com)
  • Some of the original founders of PRNRB population must have carried the "gait-keeper" DMRT3 allele upon arrival to the island. (caspianhorse.org)
  • The lack of the detectable signature of selection associated with the DMRT3 in the PRPF would be expected if this native breed was originally derived from the genetic pool of PRNPB horses established earlier and most of the founders already had the mutant allele. (caspianhorse.org)
  • First, the study tests a partial resolution to 'the genetic paradox of invasions', demonstrating that variation at key parts of the genome permits rapid adaptation even in a population with low overall genetic diversity. (sflorg.com)
  • however, the relative contributions of developmental adaptation (within the individual) and genetic adaptation (within the population of which the individual is part) to the acquisition of this phenotype have yet to be resolved. (silverchair.com)
  • [16] Isolated P. leucopus populations inhabiting NYC parks show signs of molecular-level adaptation to urban food resources. (wikipedia.org)
  • We found that the introduced populations of P. virginica had significantly higher germination percentages and faster and shorter durations of germination than native populations. (pensoft.net)
  • The result is a population with low genetic variation and often a much higher incidence of variants that may be rarer in the general population. (bridgeinformatics.com)
  • A comparative analysis of the pre-existing hierarchal caste system and primitive Europeans, matrilineal factors, and increased incidence of population bottlenecks gives an insight into plausible theories that could have led to infringement across the borders of the Indian subcontinent. (srjhs.org)
  • Prospective, large-scale, population-based studies study of iGAS in the United States found a stable an- of iGAS are needed that include AI/AN as a necessary nual incidence rate of 4.3 cases/100,000 population first step to understanding the effects of iGAS. (cdc.gov)
  • 1 ). Improved sanitation and increased availability of States during 1995-1999, found an annual incidence antimicrobial drugs have led to a decline in GAS in- of 2.2-4.8 iGAS cases/100,000 population ( 3 ). (cdc.gov)
  • Each report conclud- populations within industrialized countries ( 5 ), most ed that iGAS incidence had been stable not only intra- likely as a consequence of health disparities between study but also across decades, starting with the work of general populations and marginalized peoples, in Hoge et al. (cdc.gov)
  • Post-settlement survival was a clear bottleneck, particularly in seagrass meadows where no juvenile urchins were recorded. (csic.es)
  • As survival constantly improves, natural selection is no longer a major force that shapes the human population. (visionlearning.com)
  • the process whereby characteristics that promote survival and reproduction are passed on to future generations, so these characteristics become more frequent in the population over time. (visionlearning.com)
  • In our study, we started by looking at the genetic ancestry and diversity of current Puerto Rican horse populations using a 668 bp fragment of the mitochondrial DNA D-loop (HVR1) in 200 horses from 27 locations on the island. (caspianhorse.org)
  • These findings have implications for investigating avian malaria epidemiology and population dynamics. (biomedcentral.com)
  • I'm hoping to work on this question in the near future, because it's important to helping understand the relevant bee's population dynamics in modern agricultural systems, as well as what it may mean for Cucurbita crops," López-Uribe says. (ncsu.edu)
  • 2021. Qualitative and quantitative differences in the acetylcholinesterase genes can partly explain the resistance differences in Leptinotarsa decemlineata populations. (uvm.edu)
  • These results demonstrate striking differences in germination strategies between native and introduced populations which may contribute to their successful invasion. (pensoft.net)
  • The Colombian health information system, known as SISPRO, did not report mesothelioma cases diagnosed in the municipality, posing a significant challenge in understanding the health impacts of asbestos exposure on the population of Sibaté. (bvsalud.org)
  • Due to the high degree of genetic variation, it has often been extremely difficult to trace the past of the individuals native to the Indian subcontinent. (srjhs.org)
  • In order for a population to adjust to changing environments, this variation can be crucial - or so scientists have often thought. (sflorg.com)
  • In the introduced range, however, their germination strategies were more conserved, with less variation amongst populations, suggesting that P. virginica may have experienced strong selection for earlier life history characteristics. (pensoft.net)
  • Using ancient and modern genome-wide data, we find that the ancestors of all present-day Native Americans, including Athabascans and Amerindians, entered the Americas as a single migration wave from Siberia no earlier than 23 thousand years ago (KYA), and after no more than 8,000-year isolation period in Beringia. (dna-explained.com)
  • Subsequent gene flow resulted in some Native Americans sharing ancestry with present-day East Asians (including Siberians) and, more distantly, Australo-Melanesians. (dna-explained.com)
  • Additionally, they found evidence of post-split gene flow between Siberians and Native Americans which seems to have stopped about 12,000 years ago, which meshes with the time that the Beringia land bridge was flooded by rising seas, cutting off land access between the two land masses. (dna-explained.com)
  • That's because the educational backgrounds of immigrants and native-born Americans are different. (visalawyerblog.com)
  • Among native-born Americans, 91% have a high school diploma or higher, whereas only 62% of noncitizens do. (visalawyerblog.com)
  • If the distribution of labor shows that immigrants are entering areas of the labor force that native-born Americans choose not to work in, then those immigrants are filling a vital role in the economy. (visalawyerblog.com)
  • Immigrants choose different jobs from native-born Americans. (visalawyerblog.com)
  • They come to be fruit pickers, as well as janitors and housekeepers, jobs native-born Americans typically do not choose as careers. (visalawyerblog.com)
  • Just looking at the fields of work that immigrants enter into compared to native-Americans, the fields that native-Americans enter compared to immigrants vary quite substantially in terms of how many occupy a given field. (visalawyerblog.com)
  • Almost 9% of immigrants are employed in building, grounds keeping, and maintenance, but only 3% of native-born Americans are. (visalawyerblog.com)
  • The combination of central hypoventilation, the higher altitude at which populations of Athabascan Native Americans reside, and vascular malformations all may contribute to this hypoxia. (eyewiki.org)
  • Despite this bottleneck in seagrasses, adult urchin populations were very similar in both seagrass and macroalgal habitats indicating that other processes (potentially migration) could be key in determining adult distributions across the mosaic. (csic.es)
  • Their study illustrates that large biobank datasets like these, particularly in founder populations, can provide deeper insights into the effects of dosage of Mendelian variants, meaning the number of copies of the variant that are present. (bridgeinformatics.com)
  • Traditionally, it's been assumed that successful populations contain high genetic diversity, or a variety of characteristics allowing them to adapt and thrive. (sflorg.com)
  • If a population bottleneck occurs during an invasion, the resulting depletion of genetic variants could increase inbreeding depression and decreased adaptive potential, potentially resulting in the extinction. (authorea.com)
  • A representation of how natural selection occurs, from the appearance of a mutation to the change in a population. (visionlearning.com)
  • Researchers do occasionally find incredibly successful populations that have passed through severe bottlenecks, dramatically decreasing their genetic diversity relative to their source. (sflorg.com)
  • Given the declining genetic variability, researchers expected to see adverse effects in the "newer" populations of P. pruinosa . (ncsu.edu)
  • One crucial piece of evidence was uncovered by researchers at the Pontifical Catholic University of Chile (PUC), who studied the impact of genetic bottlenecks on Mastrus populations that were introduced to different countries. (extensionaus.com.au)
  • This knowledge about the Svalbard reindeer can also change the way researchers study the effects of genetic bottlenecks, Dussex said. (eurasiareview.com)
  • The results strongly suggest that the effects of ocean acidification on oyster larvae persist well into the juvenile phase, he says, with potential consequences for oyster populations. (sciencedaily.com)
  • A discussion of minimum viable population in the context of humans, historic examples, possible strategies to mitigate problems and scope for small groups to continue to survive even in a world radically changed by climate change (post collapse). (arctic-sea-ice.net)
  • This near-extinction, where only a few individuals with their unique genetic variants survive, is called a bottleneck in population biology. (eurasiareview.com)
  • We discuss our findings also in the light of how Wolbachia survive within both the native and the novel host. (nature.com)
  • Some of the most useful resources for identifying clear signals in genome-wide studies are populations with limited genetic diversity. (bridgeinformatics.com)
  • The Department of Biodiversity, Conservation and Attractionsâ Gilbertâ s potoroo population genetic study is exploring genetic diversity across all â ¦ Its body has large amounts of fur, â ¦ The Gilbert's Potoroo Action Group (GPAG) formed in 2001. (utistop.co.uk)
  • Host-parasite co-evolutionary relationships are thought to maintain genetic diversity in both host and parasite populations [ 17 ]. (biomedcentral.com)
  • Restricted diversity, known as a genetic bottleneck, can lower the vigor of takhi descendants. (amnh.org)
  • While this population has lost a large amount of overall genetic diversity relative to its European source, a piece of DNA associated with cold tolerance in a prior study appears to be under strong selection from north to south across its invasive West Coast range. (sflorg.com)
  • The present study contributes to our knowledge of the genetic diversity of the Caspian caspian horse population and helps to deûne its genetic conservation strategies. (caspianhorse.org)
  • However, due to a greater diversity of foods available for consumption, a mobile lifestyle, and relative freedom from epidemic diseases that come from larger populations, hunting and gathering bands comparatively enjoyed a standard of living far superior to that of a Neolithic village dweller. (ipl.org)
  • and diversity in the Midwest was greater than that of populations on the East Coast. (ncsu.edu)
  • The diversity of medical schools continues to improve, with the numbers of female, black or African American students, and American Indian or Alaska Native applicants and enrollees increasing, according to 2018 data released by the AAMC. (aamc.org)
  • In an attempt to extend his genetic analysis of people, Cavalli-Sforza began the Human Genome Diversity Project to gather and store genetic samples from populations around the world. (stanford.edu)
  • A major challenge is identifying the exact genetic variant responsible for a given Mendelian disorder, particularly if the variant is rare, found in a highly genetically diverse population, or is only harmful when two copies of the variant are present (called a homozygous recessive inheritance pattern). (bridgeinformatics.com)
  • He found that people from the same population are as genetically diverse as people from two different groups, essentially showing that at the genetic level, there is no such thing as race. (stanford.edu)
  • As technology became available to survey variations at the genetic level, Cavalli-Sforza began examining genetic changes on the Y chromosome in populations around the world. (stanford.edu)
  • It is now an invasive pest that kills many native animals. (utistop.co.uk)
  • A key component of IPDM is the use of natural enemies, also known as biocontrol agents, to regulate pest populations. (extensionaus.com.au)
  • Luca was one of the first scientists to use genetic information to understand the relationships between different human populations at the level of the DNA," said Marcus Feldman , PhD, professor of biology at Stanford. (stanford.edu)
  • Meanwhile the wild populations of Przewalski's horse, or takhi (meaning "spirit"), as they are known in Mongolia, declined as animals were killed and collected by Europeans, displaced by domesticated grazing animals, and hunted for food. (amnh.org)
  • Before contact with Europeans, Native American peoples had begun cultivating Cucurbita crops. (ncsu.edu)
  • They then compared these results with a reference panel of 3053 individuals from 169 populations which included the ancient Saqqaq Greenland individual at 400 years of age as well as the Anzick child from Montana from about 12,500 years ago and the Mal'ta child from Siberia at 24,000 years of age. (dna-explained.com)
  • That year a wild mare was caught in Mongolia, bringing the breeding population up to 13 individuals, from which all takhi alive today are descended. (amnh.org)
  • I am interested in how these ecological interactions evolved, how they influence the success of individuals and populations, and how they influence disease. (exeter.ac.uk)
  • Genetic drift is a change in the frequency of a population's genes and alleles over time, often by founder effects (when a small group of individuals relocate) or bottlenecking (when a large population is decimated, leaving a smaller group to repopulate). (visionlearning.com)
  • Argentine population genetic structure was examined using a set of 78 ancestry informative markers (AIMs) to assess the contributions of European, Amerindian, and African ancestry in 94 individuals members of this population. (blogspot.com)
  • In 1995, there were only 60 individuals left, but today the population has grown to around 200. (eurasiareview.com)
  • This can happen in populations with recent bottlenecks, producing a founder effect- where a current population is the result of a small pool of initial "founders" either due to catastrophe (like a significant famine) or geographical isolation. (bridgeinformatics.com)
  • Recent scientific studies indicate that the single known small population of Gilbert's potoroos has experienced a dramatic, recent genetic bottleneck. (utistop.co.uk)
  • And we think that is causing these more recent genetic bottlenecks. (ncsu.edu)
  • Follow-up monitoring of orchards in each state found Mastrus has considerable promise for reducing codling moth populations in the season following release (Williams 2019). (extensionaus.com.au)
  • The most common theory that exists is the Aryan Invasion Theory (AIT) proposed by Max Muller in the 19th century, which suggests that dark-skinned Dravidians (people belonging to the Indus Valley Civilization [IVC]) were native to the Indian subcontinent before the Indo-Aryan invasion, westerners of European origin, and fair skin, who spoke Vedic Sanskrit. (srjhs.org)
  • My current research is examining nutrient acquisition by fungi, how feeding mechanisms evolve and how external digestion can influence the fitness of a pathogen population and the damage that they cause to plants. (exeter.ac.uk)
  • Immigrants make the economy more efficient by reducing bottlenecks caused by labor shortages, both in the high-skill and low-skill area. (visalawyerblog.com)
  • Since immigrants have a smaller share of high school diplomas and B.A.s, which is where native workers tend to be concentrated, they do not compete directly with most native-born workers. (visalawyerblog.com)
  • For instance, Almost 8% of immigrants work in food service, compared with 5% of native-born workers. (visalawyerblog.com)
  • In contrast, nearly a quarter of native-born workers are employed in sales and office occupations, compared with 17% of immigrants. (visalawyerblog.com)
  • There are a variety of theories that have been expounded on to throw some light on the ancestry of various population groups that exist in India today. (srjhs.org)
  • This study focuses on a northwest Pacific population of green crab that has spread within the last 35 years from a single source. (sflorg.com)
  • In the end, the group collected samples from more than 50 populations that are now stored at the Center for the Study of Human Polymorphisms in Paris. (stanford.edu)
  • We were specifically expecting to see an increased rate of sterile males in populations with less genetic variability, and we didn't find that," López-Uribe says. (ncsu.edu)
  • The inheritance of ABDS is autosomal recessive, and this is supported by its presence in a very specific population, equal distribution between males and females, and its prevalence in families of consanguineous parents. (eyewiki.org)
  • It appears that Australian or more accurately, Australo-Melanese DNA has been found in South America's Native American population. (dna-explained.com)
  • Also, the quality of animal feed is very important, the presence of certain residues or contaminants can lead to entry into the human food chain and consequently affect humans.Alternative sources of energy and protein are something that will be given special attention in the coming period, due to the limited resources of arable land and the projected increase in the population. (isasevent.com)
  • Being opportunistic feeders, urban P. leucopus populations subsist on food discarded by humans as a readily available source of nutriment, thereby consuming a lot more fat and carbohydrates than rural populations. (wikipedia.org)
  • They indicate that there is a "clean split" between the Native American population and the Koryak about 20,000 years ago. (dna-explained.com)
  • But this has not prevented the Svalbard reindeer from evolving into what is today a viable population of more than 20,000 animals. (eurasiareview.com)
  • Applicants reporting as American Indian or Alaska Native alone or in combination with another race or ethnicity rose by 10% to 559 and matriculants increased by 6.3%, to 218. (aamc.org)
  • Natural selection has always been the prime shaper of the human population and DNA sequence analysis has revealed just how powerful the force has been since the dawn of civilization. (visionlearning.com)
  • Native populations of P. leucopus in New York city are isolated by dense human infrastructure and are largely confined to small urban forest islands such as Prospect Park and Central Park . (wikipedia.org)
  • [14] The limited gene flow caused by human activities and coupled with a bottleneck event in urban populations has been powerful enough to lead to evolutionary divergence of urban white-footed mice. (wikipedia.org)
  • Although Cavalli-Sforza and others saw the project as a way to safeguard DNA from dwindling populations and to learn about human history, others saw it differently. (stanford.edu)
  • Ten populations were updated: from Colombia (province Antioquia), from Ningxia in China (Hui), from Taiwan (Han), from Norway (Eastern, Central, Northern, Southern, Western parts and from Oslo) as well as from Russia (Novgorod). (blogspot.com)
  • Gaylord is investigating the consequences of this increasing ocean acidity on the growth of larval and juvenile Olympia oysters native to the U.S. West Coast. (sciencedaily.com)
  • This perennial-polygyne behavior has been observed most commonly within the tropical and subtropical regions of the invasive Vespula pensylvanica and V. germanica, and rarely within their native temperate ranges. (georgiasouthern.edu)
  • We used molecular markers to reconstruct the demographic range expansion and colonization routes of P. pruinosa from its native range into temperate NA. (ncsu.edu)
  • In 1880, Russian explorer Nikolai Przewalski encountered a small population of wild horses while traversing central Asia. (amnh.org)
  • Populations as small and isolated as this have a serious risk of inbreeding. (amnh.org)
  • changes in gene frequencies due to random events, such as when a small group is isolated from the rest of the population, thus narrowing the gene pool. (visionlearning.com)
  • Genetic bottlenecks can occur when a small number of insects from a laboratory colony are used to form a new laboratory colony in another country. (extensionaus.com.au)
  • In the case of Mastrus, this has occurred several times as small numbers of insects were transferred from the native range in Kazakhstan to the United States, and then to laboratories in Argentina, New Zealand and finally to Australia. (extensionaus.com.au)
  • Populations living on isolated islands are often small and are well-suited studying genetic problems. (eurasiareview.com)
  • In this case, we are dealing with a population that suffers from a high degree of inbreeding, which is usually bad news for a small population. (eurasiareview.com)
  • High rates of polygyny in tropical Mexico within the native range of Vespula squamosa. (georgiasouthern.edu)
  • Conversely, taxa easily affected by inbreeding depression - having high MVPs - are often decidedly K-strategists, with low population densities while occurring over a wide range. (arctic-sea-ice.net)
  • But we did find genetic 'bottlenecks' in all of the populations - even in Mexico. (ncsu.edu)
  • These issues are similarly important for research design: early assessment will il ustrate elevated patterns of distress across the population, which is likely to diminish over time for the vast majority. (who.int)