AP BIOLOGY

EVOLUTION

TYPES OF SELECTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When has speciation occurred?
A
When populations no longer look the same
B
When populations no longer have the same frequency of alleles
C
When populations are living in different environments
D
When populations can no longer interbreed
Explanation: 

Detailed explanation-1: -For speciation to occur, two new populations must be formed from one original population, and they must evolve in such a way that it becomes impossible for individuals from the two new populations to interbreed.

Detailed explanation-2: -Reproductive isolation occurs when a population splits into two groups and the two populations no longer interbreed. When populations become reproductively isolated, they can evolve into two separate species.

Detailed explanation-3: -Barriers to reproduction. Thus, new species form when individuals from diverging populations no longer recognize one another as potential mates, or opportunities for mating become limited by differences in habitat use or reproductive schedules.

Detailed explanation-4: -a) Temporal isolation. Individuals of different species do not mate because they are active at different times of day or in different seasons.

Detailed explanation-5: -Geographic isolation It doesn’t even need to be a physical barrier like a river that separates two or more groups of organisms-it might just be unfavorable habitat between the two populations that keeps them from mating with one another.

There is 1 question to complete.