Aim 29: Speciation

gene pool

is all of the alleles in a population

genetic drift

The shift in the gene pool toward a specific trait

founder effect

Occurs when some organisms leave the gene pool and start a new population

bottleneck effect

occurs when a natural disaster, and only a few organisms of a population survive

gene flow

Occurs when an organism gene population is introduced to another population

Speciation

Occurs when a group of organisms are separated by a barrier creating a new species over generations

reproductive isolation

Occurs when members of the same species can no longer mate with one another. Forms a new species

Geographic isolation

Occurs when a physical barrier separates a species

behavioral isolation

Occurs when organisms of the same species develops, different mating behaviors

temporal isolation

meet at different times

mechanical isolation

Occurs when the reproductive parts no longer match up or are compatible

divergent evolution

Occurs when one species becomes many species

convergent evolution

Occurs when different species evolve similar traits

coevolution

Occurs with different species evolve together