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42 Cards in this Set

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Emphasizes the extensive genetic variation within populations and recognizes the importance of quantitative characters.
Population Genetics
Idea that integrates discoveries and ideas from many different fields.
Modern Synthesis
A localized group of individuals belonging to the same species.
Population
A group of populations whose individuals have the potential to interbreed and produce fertile offspring.
Species
The total aggragate of genes in a population at any one time.
Gene Pool
Emphasizes the extensive genetic variation within populations and recognizes the importance of quantitative characters.
Population Genetics
Idea that integrates discoveries and ideas from many different fields.
Modern Synthesis
A localized group of individuals belonging to the same species.
Population
A group of populations whose individuals have the potential to interbreed and produce fertile offspring.
Species
The total aggragate of genes in a population at any one time.
Gene Pool
An axiom maintaining that the sexual shuffling of genes alone cannot alter the overall genetic makeup of a population.
Hardy-Weinburg Theorem
The condition describing a nonevolving population.
Hardy-Weingburg Equilibrium
Frequency of "RR" genotype + Frequency of "Rr" genotype + Frequency of "rr" genotype = 1.
Hardy-Weinburg Equation
A change in the gene pool of a population from generation to generation.
Microevolution
A change in a population's allele frequency due to chance.
Genetic Drift
Genetic drift is due to a drastic reduction in population size.
Bottleneck Effect
Genetic drift in a new colony.
Founder Effect
Differential success in a population.
Natural Selection
A population may lose or gain alleles due to the migration of fertile individuals or gametes between populations.
Gene Flow
Change in an organism's DNA.
Mutation
Two or more distinct morphs are each represented in high enough frequencies to be readily noticeable.
Polymorphic
The level of whole genes and how they differ.
Gene Diversity
Compares the nucleotide sequences of DNA samples from two individuals and then pooling the data from many such comparisons of two individuals.
Nucleotide Diversity
Differences in gene pools between populations of subgroups of populations.
Geographic Variation
A graded change in some trait along a geographic axis.
Cline
The ability of natural selection to maintain stable frequencies of two or more phenotypic forms in a population.
Balance Polymorphism
Individuals who are heterozygous at a particular locus have greater survivorship and reproductive success than any type of homozygote, then two or more alleles will be maintained at that locus by natural selection.
Heterozygote Advantage
The survival and reproduction of any one morph declines if that phenotypic form becomes too common in the population.
Frequency-Dependent Selection
No selective advantage for some individuals over others. Example: the diversity of human fingerprints.
Neutral Variation
The contribution of a genotype to the next generation compared to the contributions of alternative genotypes for the same locus.
Relative Fitness
The contribution an individual makes to the gene pool of the next generation relative to the contribution of other individuals.
Darwinian Fitness
Natural selection that favors individuals at one end of the phenotypic range.
Directional Selection
Occurs when environmental conditions are varied in a way that favors individuals on both extremes of a phenotypic range.
Diversifying Selection
Acts against the extreme phenotypes and favors the more common intermediate variants.
Stabilizing Selection
The distinction between males and females secondary sex characteristics.
Sexual Dimorphism
A direct competition among individuals of one sex for members of the opposite sex.
Intrasexual Selection
Individuals of one sex that are choosy in selecting their mates from individuals of the opposite sex.
Intersexual Selection
Emphasizes the extensive genetic variation within populations and recognizes the importance of quantitative characters.
Population Genetics
A theory of evolution emphasizing natural selection, gradualism, and populations as the fundamental units of evolutionary change.
Modern Synthesis
Localized group of individuals belonging to the same species.
Population
A group of populations whose individuals have the potential to interbreed and produce fertile offspring in nature.
Species
The total aggregate of genes in a population at any one time.
Gene Pool