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Exam 3
Models and stuff
10
Biology
Undergraduate 4
04/16/2015

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Term
Locus
Definition
Specific location of a gene on a chromosome
Term
Heterozygosity
Definition
Having one copy of each allele, being a heterozygote for genes
Term
Polymorphism
Definition
Presence of different phenotypes of genotypes on the same locus
Term
Replacement (non-synonymous) Variation
Definition
Mutation/Variation that changes the codon that the amino acids code for
Term
Synonymous Variation
Definition
Mutation/Variation that does not effect the amino being coded for by the amino acids
Term
Mutation
Definition
Change in one or multiple DNA base pairs. Usually happens randomly
Term
Random Drift
Definition
More effective in smaller populations. Genetic drift that is random
Term
Neutral Model
Definition
Variation is caused by random drift. Changes don't have an effect on the population's ability to reproduce and survive
Term
Hardy-Weinberg Assumptions
Definition
Diploid Organisms
Sexual Reproduction
Generations do not overlap
Mating is random
Population is infinitely large
Allele frequencies are the same in both sexes
No mutation, selection, or migration occurs
Term
Heterozygote Superiority
Definition
Heterozygotic genotype is provides better fitness than either of the homozogotic genotypes
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