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14.4

Micro evolution is a change in a population's gene pool.

QuestionAnswer
gene pool all of the alleles in all the individuals that make up a population
micro evolution evolution on the smallest scale—a generation-to-generation change in the frequencies of alleles within a population
what processes lead to genetic variation? mutations and sexual recombination—are random.
frequency of alleles how often certain alleles occur in the gene pool.
Hardy-Weinberg equilibrium condition that occurs when the frequency of alleles in a particular gene pool remain constant over time
Genetic Drift change in the gene pool of a population due to chance
Bottleneck effect genetic drift, which decreases genetic variation in a population.
founder effect Genetic drift in a new colony is known as the founder effect because the change relates to the genetic makeup of the founders of the colony
gene flow exchange of genes between populations
mutation mutation enters the population's gene pool.Natural selection or genetic drift (or both) can influence whether the frequency of a new mutation increases in a population.
how natural selection lead to fitness? contribution that an individual makes to the gene pool of the next generation compared to the contributions of other individual
Explain Peter and Rosemary Grants study The Grants documented changes in beak size among medium ground finches over many years. Their data relate this microevolution of beaks to environmental change.
Created by: beakru1
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