BIOL 2200 Lecture 4: Genetic variation & the Hardy-Weinberg equation

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Flashcards relating to genetic variation and the Hardy-Weinberg equation.

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9 Terms

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Phenotypic plasticity

A genotype that produces different phenotypes in response to the environment.

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Genetic variation

Differences among individuals in the composition of their genes or DNA sequences.

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Alleles

Different variants of a gene (P/p, A1/A2)

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Gene pool

All copies of all alleles at every locus in all members of the population

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Evolution

Change in the gene frequencies of a population from generation to generation

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Hardy-Weinberg principle

If alleles are transmitted by meiosis and random mating, frequencies do NOT change over time

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Dominant allele

Determines phenotype

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Recessive allele

Masked in phenotype

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Population

Group of individuals of the same species that live in the same area and interbreed, leaving viable offspring