12.1 Flashcards
(9 cards)
natural selection
the process through which populations adapt and change
genetic drift
the change in frequency of a gene in a population due to random change
variation
differences in characteristics among individuals in the same population
fitness
how many offspring an organism produces
differential reproduction
some individuals reproduce more successfully than others due to their adaptations
adaptation
a genetic variation that increases an individuals fitness
what are the five fingers of evolution
small population, non-random mating, mutation, gene flow, and natural selection
how are natural selection and genetic drift similar
allele frequencies change
how are natural selection and genetic drift different
genetic drift is random and natural selection is based on the more beneficial trait
