9th Grade Biology - chapter 17.3

the form of reproductive isolation in which populations are separated by rivers, mountains, or oceans is called _______.

geographic isolation

The formation of a new species is called ________.

speciation

the form of reproductive isolation in which species reproduce at different times is called _______.

temporal isolation

speciation

the formation of a new species

reproductive isolation

the separation of a species or population so that member can no longer interbreed

What must be different about the reproductive behavior of species that are isolated by temporal isolation?

they reproduce at different times of the day or year

What is the relationship among reproductive isolation, geographic isolation, behavioral isolation, and temporal isolation?

Geographic isolation, behavioral isolation, and temporal isolation are all causes of reproductive isolation.

temporal isolation

a form of reproductive isolation in which two or more species reproduce at different times.

geographic isolation

a form of reproductive isolation in which two populations are separated by geographic barriers such as rivers, mountains, or bodies of water.

behavioral isolation

a form of reproductive isolation in which two populations develop differences in courtship rituals or other behaviors that prevent them from breeding.

Species

a population whose members can breed and produce fertile offspring

What is the current hypothesis about Galapagos finch speciation?

according to this hypothesis, speciation in Galapagos finches happened by the founding of a new population, geographic isolation, changes in the new population's gene pool, behavioral isolation, and ecological competition.

how can differences in behavior lead to reproductive isolation?

mating rituals might become different in two separate populations. individuals may not recognize or respond to the behaviors of the other population.

What types of isolation lead to the formation of new species?

new species can arise from behavioral isolation, geographic isolation, and temporal isolation