microevolution Flashcards
Stabilizing selection
there will be no new species the 2 extremes are being selected against
directional selection
might lead to 1 new species
disruptive selection
the in between is being selected against as and end result you might see 2 new species
Sexual selection
form of natural selection
certain inherited traits are more likely to obtain mates than others
individuals selecting for traits not environment
Genetic drift
random process
Change in the gene pool due to chance
allele frequencies can be drastically altered by factors that change population size
The Bottleneck Effect
reduction in numbers causes a very small sample of alleles to survive to establish a new population
Founder Effect
a few individuals leave the large population to establish a new population elsewhere
Gene Flow
movement of alleles from one population to another through the migration of individuals or gametes