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Human genetic variation
Human genetic variation is the genetic differences both within and among populations. There may be multiple variants of any given gene in the human population (genes), leading to polymorphism. Many ... |
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Multiple Alleles
When the gene for one trait exists as only two alleles & the alleles play ... In these situations a heterozygous (hybrid) genotype produces a 3rd ... Now, if there are 4 or more possible phenotypes for a particular trait, then more ... There may be multiple alleles within the population, but individuals have only two of those allel... |
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Basic Principles of Genetics: Glossary of Terms
Since the gene for albinism is recessive, it only shows up in the phenotype of ... Dominant alleles for a trait are usually expressed if an individual is ... gene pool. all of the genes in all of the individuals in a breeding population. ... system has the most genes of any other known human multiple-allele series. ... . true breeding . |
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How fast is it possible for humans to run? |
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how does a mutation in the DNA cause incorrect proteins to be produced? |
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Multiple-Allele Traits - Advanced | CK-12 Foundation
Although any one person usually has only two alleles for a gene, more than two alleles can exist in the population's gene pool. ... Most, if not all of these multiple- allele traits are in traits with very diverse phenotypic possibilities. ... pleiotropy: A single gene controlling or influencing multiple phenotypic tr... |
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Introduction to Evolutionary Biology - The Talk.Origins Archive
Evolution is a change in the gene pool of a population over time. A gene ... If there were no dark moths, the population could not have evolved from mostly light to mostly dark. In order ... For example, no single human can have an A, B and an O allele. ... .. How then could natural selection favor these traits? |
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Genetics, Inheritance & Variation - Master frameset
Multiple Alleles ... Variation gene pool and populations ... If an individual shows the recessive trait (white flowers in the above example) then they must ... This means that the inheritance of these genes is different for males and females, ... The flower colour gene C has two alleles: CR (red) and CW (white). |
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Principles of Human Population Genetics - Memorial University
Mendelian Genetics concerns the behavior of gene loci in single crosses ... reproduction by random union of gametes ("tide pool" model). ... (1) multiplealleles / locus. p + q + r ... iff [read: "if and only if"] allele frequencies in males and females are identical ... . The population has optimal fitness when both ... |
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Biology of Animals & Plants - Genetics
For each trait that is determined by a single gene (many traits are produced from ... which turned out later to not be true, but many of them do sort separately. ... two genes working together, two alleles per gene; these multiple-gene traits do ... alleles that usually have no altering effect on the coded trait, or a bad effect if an ... |
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Online Introduction to Biology - History - Genetics
For each trait that is determined by a single gene, an individuals particular version of ... which turned out later to not be true, but many of them do sort independently. ... two genes working together, two alleles per gene; thesemultiple-gene traits do ... The extra genes, according to recent research, have at least 4 functions if ... |