1.

Geographic isolation is considered the last stage in speciation.

True

False

2.

The male crane performs an elaborate dance in an attempt to court and mate with a female. If this courtship dance changed and became perceived as a territorial dance, it could lead to what type of barrier?

behavioral isolation

geographic isolation

mating isolation

temporal isolation

1. False

Speciation is the formation of new species from a population of species. This process has three main stages: isolation, where the population is separated; adaptation, where the isolated population adapts to the new environment; and reproductive isolation, where the two populations can no longer breed to produce fertile offspring.

2. Behavioral isolation

This occurs when there is a difference in mating rituals or other behaviors which prevent interbreeding.

1. The correction option is false. This is because, reproductive isolation is the one that is considered as the last stage in speciation.

2. Geographic isolation. The correct option is B.