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  • trait
  • When a predator uses color to identify the location of prey in an environment, then the prey that have heritable trait variations that allow them to blend into the background better, tend to survive longer and reproduce more often. (northwestern.edu)
  • When a bug uses color to identify the location of mates in an environment, then the mates that have heritable trait variations that allow them to stand out from the background better, tend to reproduce offspring with that bug more often. (northwestern.edu)
  • 3 genes determine the heritable trait of bug color. (northwestern.edu)
  • The disease is produced by having a double 'dose' of a recessive gene and heterozygotes (with one dominant and one recessive gene for the sickling trait) have an advantage in terms of resistance to malaria. (biology-online.org)
  • In this case, individuals who possess a heritable trait that gives them an advantage in survival and/or reproductive success will reproduce more often than those possessing other traits, so more members of subsequent generations are likely to possess the form of the gene that confers that trait. (home-school.com)
  • one of a pair of genes that occupy corresponding positions on homologous chromosomes and determine alternative expressions of a single trait. (exploreevolution.com)
  • sickle cell gene
  • How come when the normal cell gene is dominant and the sickle cell gene is recessive, if a person have a normal and a sickle cell gene, there will be still some sickle cell found in that person? (biology-online.org)
  • Individuals who inherit a copy of the sickle cell gene from both of their parents ( homozygotes ) die early from the disease, whereas heterozygotes (individuals who inherit only one copy of the gene) are favored in malarial areas (including equatorial Africa) over those without any copies, because they contract milder cases of malaria and thus are more likely to survive it. (encyclopedia.com)
  • However, in temperate regions where malaria is absent (such as North America ), there is no heterozygote advantage to the sickle cell gene. (encyclopedia.com)
  • bacteria
  • Remarkably, further database and phylogenetic analysis highlighted four ESTs that are present in the A. ricciae genome but which represent genes probably arising from fungi or bacteria by horizontal gene transfer. (biologists.org)
  • phenotype
  • These overall blend of pigments that results in a single phenotype for coloration is determined by an RGB [Red-Green-Blue] calculation of all the gene values. (northwestern.edu)
  • Proportion
  • The different ways to form genotypes for the next generation can be shown in a Punnett square , where the proportion of each genotype is equal to the product of the row and column allele frequencies from the current generation. (wikipedia.org)
  • So there is an increase in the proportion of the population that carries the form of a gene that confers an advantage and a subsequent decrease in the proportion carrying forms of the gene that are less advantageous UNDER CURRENT ENVIRONMENTAL CONDITIONS. (home-school.com)
  • genotypes
  • This happens as a result of sampling error some genotypes just happen to reproduce more than other genotypes, not because they are "better," but just because they got lucky. (berkeley.edu)
  • next generation
  • Through reproduction, individuals pass their genes on to the next generation. (encyclopedia.com)
  • Not all individuals, for various reasons, will be able to contribute their genes to the next generation. (docplayer.net)
  • If in a population of 1000 individuals the frequency of "a" is 0.5 in one generation, then it may by chance be 0.493 or 0.505 in the next generation because of the chance production of a few more or less progeny of each genotype. (blogspot.com)
  • For example, if there are individuals with blue and red genes and, by chance, more individuals with blue genes reproduce, there will be more individuals with blue genes in the next generation. (biologydictionary.net)
  • neutral
  • The frequency of a neutral allele may shift slightly between generations, sometimes increasing and sometimes decreasing. (encyclopedia.com)
  • Artificial selection can reduce the frequency of disease-liability genes, be neutral to their propagation, or sometimes preferentially select for them. (vin.com)
  • amino acid
  • GSSPs can also be used for predicting the amino acid mutational space available for antigen-driven selection and for understanding factors modulating the maturation pathways of antibody lineages in a gene-specific context. (frontiersin.org)
  • reproductive
  • A smallish number of founders makes the point best but even half the original population in reproductive isolation should have a new set of gene frequencies that would eventually create a new subspecies as well. (evcforum.net)
  • mechanisms
  • To gain insight into the molecular mechanisms used by bdelloids during anhydrobiosis, we constructed a cDNA library enriched for genes that are upregulated in Adineta ricciae 24 h after onset of dehydration. (biologists.org)
  • time
  • The majority of the genes identified was confirmed by real-time quantitative PCR to be capable of upregulation in response to evaporative water loss. (biologists.org)