KAKEN - Research Projects | Molecular phylogenetic geography of pan tropic sea dispersed plants : Gene flow and species...
Gene flow and species differentiation through geographic barrier.. Research Project ... Moreover gene flows among distant populations were observed. Geographic distance was slightly correlated with genetic distance. ... pan tropic sea dispersed plant / molecular phylogenetic geography / geographical barrier / gene flow / speciation / Hibiscus ... These results suggested substantial gene flow occurred between populations in the different oceanic regions due to sea-drifted ...https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14405015/
Frontiers | Origin and Dispersal of Domesticated Peach Palm | Ecology and Evolution
... and allows visualizing the more humid equatorial geographic barrier hampering gene flow between them. ... although there is gene flow (or gene bank error?) visible in the Structure analyses (Figures 8B,C). Another possibility is that ... Although the Core Collection is quite small and there appears to be abundant gene flow among these populations at different ... Sympatry has additional significance: gene flow inhibits population divergence (Futuyma, 2005; p. 216) and this suggests that ...https://www.frontiersin.org/articles/10.3389/fevo.2017.00148/full
Wahlund effect - Wikipedia
The underlying causes of this population subdivision could be geographic barriers to gene flow followed by genetic drift in the ...https://en.wikipedia.org/wiki/Wahlund_effect
Genetic history of Italy - Wikipedia
confirms that the Mediterranean Sea has acted as a strong barrier to gene flow through geographic isolation following initial ... Other Italians pull away toward Southeastern and Central Europe consistent with geography and some post-Neolithic gene flow ... Molecular anthropology found no evidence of significant Northern geneflow into the Italian peninsula over the last 1500 years. ... has prevented large migration flows aimed at colonizing the Italian lands. Recent genome-wide studies have been able to detect ...https://en.wikipedia.org/wiki/Genetic_history_of_Italy
Geodispersal - Wikipedia
As these geographic barriers break down, organisms of the secluded ecosystems can interact, allowing gene flow between ... which reduces gene flow through the creation of geographic barriers. In geodispersal, the geographical ranges of individual ... "Terrestrial fishes: rivers are barriers to gene flow in annual fishes from the African savanna." Journal of Biogeography, Oct. ... In biogeography, geodispersal is the erosion of barriers to gene flow and biological dispersal (Lieberman, 2005.; Albert and ...https://en.wikipedia.org/wiki/Geodispersal
Commonalities in Development of Pure Breeds and Population Isolates Revealed in the Genome of the Sardinian Fonni's Dog |...
From a genetic viewpoint, dog breeds are defined as populations with human-induced or geographic barriers to gene flow, and ... Geographic isolation, however, is an additional barrier that can affect both the human inhabitants of a region, as well as the ... Once inhabited, the island maintained a distinctive genetic homogeneity, although geographic and linguistic barriers led to the ... 2014 Linguistic, geographic and genetic isolation: a collaborative study of Italian populations. J. Anthropol. Sci. 92: 201-231 ...http://www.genetics.org/content/204/2/737
Dienekes' Anthropology Blog: mtDNA of Native Mexicans
The Mesoamerican isthmus has constituted an important geographic barrier that has severely restricted gene flow between North ...https://dienekes.blogspot.com/2009/06/mtdna-of-native-mexicans.html
Haplocarpha rueppelii - Wikipedia
... suggests a potential geographic barrier for plant dispersal and gene flow in East Africa". Science Bulletin. 60 (13): 1184-1192 ...https://en.wikipedia.org/wiki/Haplocarpha_rueppelii
Connectivity of Caribbean coral populations: complementary insights from empirical and modelled gene flow - FOSTER - 2012 -...
Further, the geographic location and porosity of the previously described east-west barrier to gene flow in the Caribbean is ... L P Holland, T L Jenkins, J R Stevens, Contrasting patterns of population structure and gene flow facilitate exploration of ... Connectivity of Caribbean coral populations: complementary insights from empirical and modelled gene flow. Authors. *. NICOLA L ... Lagrangian model of larval dispersal and a theoretical genetic model are integrated with the most extensive study of gene flow ...http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2012.05455.x/full?globalMessage=0
Biological dispersal - Wikipedia
... following the erosion of geographic barriers to dispersal or gene flow (Lieberman, 2005; Albert and Reis, 2011). Dispersal can ... The formation of barriers to dispersal or gene flow between adjacent areas can isolate populations on either side of the ... Dispersal of organisms is a critical process for understanding both geographic isolation in evolution through gene flow and the ... Lenormand, T. (2002). "Gene flow and the limits to natural selection". Trends in Ecology and Evolution. 17 (4): 183-189. doi: ...https://en.wikipedia.org/wiki/Biological_dispersal
Strawberry poison-dart frog - Wikipedia
When populations are separated by geographic distances and landscape barriers, they frequently experience restricted gene flow ... "Genetic structure is correlated with phenotypic divergence rather than geographic isolation in the highly polymorphic ...https://en.wikipedia.org/wiki/Strawberry_poison-dart_frog
Paternal Genetic Landscape of Zagros Region of Iran and Its Role in the Gene Flow in the Populations of the Region - Iranian...
Moreover, the important role of the Zagros Mountains as a geographic barrier to gene flow from neighboring regions clearly ... tree of the surrounding population and showed an important geographic barrier role for these mountains to gene flow from ... Paternal Genetic Landscape of Zagros Region of Iran and Its Role in the Gene Flow in the Populations of the Region ... Bahmanimehr A, Nikmanesh F, Yepiskoposyan L. Paternal Genetic Landscape of Zagros Region of Iran and Its Role in the Gene Flow ...http://irje.tums.ac.ir/browse.php?a_id=5279&sid=1&slc_lang=en
Topic 10.3: Gene Pools and Speciation - AMAZING WORLD OF SCIENCE WITH MR. GREEN
Three main barriers to gene flow are included: geographic, pre-zygotic and post-zygotic. Both allopatric and sympatric ... Given data, calculate allele frequencies of genes in a gene pool.. *Given data, calculate genotype frequencies for genes in a ... Topic 10.3: Gene Pools and Speciation. image from Study.com In the Gene Pools and Speciation unit we will learn some of the ... Geographic isolation - occurs when two populations of the same species or breeding group are separated by a physical barrier, ...https://www.mrgscience.com/topic-103-gene-pools-and-speciation.html
Protocols and Video Articles Authored by Monica F. Poelchau
... geographic distance in Ficus insipida and historical barriers to gene flow or cryptic reproductive barriers for Brosimum ... Comparative studies that identify common barriers to gene flow across multiple species within a community are important to both ... We identify global trends in gene expression that show gradual convergence of diapause gene expression upon gene expression ... structure of trees in this region is determined by complex interactions of both historical and current barriers to gene flow. ...https://www.jove.com/author/Monica+F._Poelchau
Genetic equilibrium - Wikipedia
This includes local adaptation, range contraction and expansion and lack of gene flow due to geographic or behavioral barriers ... They exist in large, panmictic populations that don't appear to be strongly affected by geographic barriers. In spite of this, ... Genetic equilibrium describes the condition of an allele or genotype in a gene pool (such as a population) where the frequency ... It is commonly studied using models that take as their assumptions those of Hardy-Weinberg, meaning: No gene mutations ...https://en.wikipedia.org/wiki/Genetic_equilibrium
BY52 Test 1 Flashcards - Cram.com
a speciation event in which the initial block of gene flow is caused by a geographic barrier that physically isolates the ...http://www.cram.com/flashcards/by52-test-1-439158
Substantial geographic isolation is recognized as providing the most effective barrier to gene flow, and the vast majority of ... The reproductive barriers discussed above reflect this bias. Additional barriers to gene flow found in natural populations ... A second approach is to use molecular markers to examine ongoing gene flow or to estimate gene flow indirectly from overall ... barriers that reduce gene flow can be divided into several categories (Rieseberg and Willis, 2007): (1) prepollination barriers ...http://www.plantcell.org/content/24/7/2710
Dienekes' Anthropology Blog: 2008 in review: Ethnicity Strikes Back
... differences in systems of ideas create barriers to gene flow". To me that sums it up. Genetic isolation may be geographic or ... Genetic isolation creates barriers to the flow of ideas. Conversely, differences in systems of ideas create barriers to gene ... Society, politics, and anthropology all are trickled down from genes. It is the capacity of the genes that bring about the ... "Genetic isolation creates barriers to the flow of ideas. Conversely, ...http://dienekes.blogspot.com/2008/12/2008-in-review-ethnicity-strikes-back.html?showComment=1230567300000
... of testing the hypothesis that variation in these traits can exist in a system in which non-ecological barriers to gene flow (i ... geographic barriers and genetic incompatibilities) appear to be minimal. 2. Females were sampled from 12 locations throughout ... While speciation can be found in the presence of gene flow, it is not clear what impact this gene flow has on genome- and range ... However, rigorous understanding of both gene-gene and gene-environment interactions will be required to interpret genetic ...http://academicconcepts.net/concepts/369/genetic_analysi.htm
Genetic-geographic correlation revealed across a broad European ecotypic sample of perennial ryegrass (Lolium perenne) using...
... with the Alps acting as a barrier to gene flow between North and South Europe (Balfourier et al. 1998, 2000). However, this ... Li H-W, Zang B-S, Deng X-W, Wang X-P (2011) Overexpression of the trehalose-6-phosphate synthase gene OsTPS1 enhances abiotic ... McCouch SR, McNally KL, Wang W, Sackville Hamilton R (2012) Genomics of gene banks: a case study in rice. Am J Bot 99(2):407- ... Similar genetic-geographic correlations have been seen previously across Europe in ,3000 human genotypes with a high density ( ...https://link.springer.com/article/10.1007%2Fs00122-015-2556-3
Dienekes' Anthropology Blog: 06/2013
The Himalayas: Barrier and conduit for gene flow. Gayden T, Perez A, Persad PJ, Bukhari A, Chennakrishnaiah S, Simms T, Maloney ... Altogether, our results confirm that while the Himalayas acted as a geographic barrier for human movement from the Indian ... during the last few centuries due to gene flow, and even if it didn't there is a chance that gene flow within Iberia may have ... and while North Africa gene flow into Iberia is one possible explanation, some of the gene flow may have gone the other way, e. ...http://dienekes.blogspot.com/2013_06_01_archive.html
Dienekes' Anthropology Blog: mtDNA from Nepal and Tibet (Gayden et al. 2013)
The Himalayas: Barrier and conduit for gene flow. Gayden T, Perez A, Persad PJ, Bukhari A, Chennakrishnaiah S, Simms T, Maloney ... our results confirm that while the Himalayas acted as a geographic barrier for human movement from the Indian subcontinent to ... Although previous Y-chromosome studies indicate that the Himalayas served as a natural barrier for gene flow from the south to ... Altogether, our results confirm that while the Himalayas acted as a geographic barrier for human movement from the Indian ...http://dienekes.blogspot.com/2013/06/mtdna-from-nepal-and-tibet-gayden-et-al.html?m=0
Heteropatric speciation - Wikipedia
... of our notion of sympatric speciation in that it represents a behavioral rather than geographic barrier to the flow of genes ... In recognition of the importance of this behavioral versus geographic distinction, Wayne Getz and Veijo Kaitala introduced the ...https://en.wikipedia.org/wiki/Heteropatric_speciation
The influence of oceanographic fronts and early-life-history traits on connectivity among littoral fish species | PNAS
The AOF has been reported to act as a barrier to gene flow in numerous species (38). East of the AOF, the Atlantic water flows ... Thus, the same geographic coordinates were used for individuals of all species sampled at the same site. The inference ... 1995) Gene flow and larval duration in seven species of fish from the Great Barrier Reef. Ecology 76:2373-2391. ... We show that these fronts represent major barriers to gene flow and have a strong influence on the population genetic structure ...http://www.pnas.org/content/106/5/1473.full
Does genetic structure reflect differences in non-breeding movements? A case study in small, highly mobile seabirds | BMC...
... physical isolation by geographic landmarks may not restrict gene flow. However, distance as well as intrinsic barriers, such as ... A role for nonphysical barriers to gene flow in the diversification of a highly vagile seabird, the masked booby (Sula ... We inferred gene flow in BAYESASS 3.0 using bi-directional migration rates (m) . This method was successful in the study of ... Gene flow on the ice: genetic differentiation among Adélie penguin colonies around Antarctica. Mol Ecol. 2001;10(7):1645-56. ...https://0-bmcevolbiol-biomedcentral-com.brum.beds.ac.uk/articles/10.1186/s12862-017-1008-x