Study Bio quiz #9 Flash Cards

 
Pile Management Card
Bio quiz #9

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intrasexual selection
a direct competition among individuals of one sex for mates of the oppostie sex
stabilizing selection
natural selection that favors intermediate variants by acting against extreme phenotypes
relative fittness
the contribution of one genotype to the enxt generation compared to that of alternative genotypes for the same locus
polymorphic
referring to a population in which two or more physical forms are present in readily noticable frequencies
heterzygote advantage
greater reproductive success of heterzygous individuals compared to homozygotes
gene flow
the loss or gain of alleles in a population due to the migration of fertile individuals or gametes between populations
founder's effect
genetic drift attributable to colonization by a limited number of individuals from a parent population
bottleneck effect
genetic drift resulting from the reduction of a population, typically by natural diaster
microevolution
a change in the gene opool of a population from generation to generation
genetic drift
changes in the gene pool of a small population due to chance
hardy-Weinberg equilibrium
the condition describing a nonevolving population (genetic equilibrium)
population
a group of individuals of one species that live in a particular geographic area
vestigial organs
structures of marginal, if any, importance to the organism
biogeography
the study of the past and present distribution of species
endemic
species that are confined to a specific, relativly small geographic area
homology
similarity in characteristics reasulting from the shared ancestry
descent with modification
Darwin's initial phrase for the general processes of evolution
gradualism
change attributed to the cumulative product of slow but continuous change
taxonomy
branch of science that names and classifies organisms
natural selection
differential success in the reproduction of different phenotypes resulting from the interaction of the organism with its enviroment
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