What must happen for speciation to occur?

O

A. Gene flow must increase.

O

B. A population must be isolated in some way.

O

C. All alleles in the population must become fixed.

O

D. Asexual reproduction must occur.

B. A population must be isolated in some way.

Explanation:

I got it right : p

B. A population must be isolated in some way.

Explanation:

Speciation refers to the origin of new species from a pre-existing species. Speciation can be Gradual or instantaneous depending on the time taken for evolution of new species. Speciation occurs when gene pool of a population is somehow reproducively isolated from other populations of parent species. This isolation can occur by geographical barrier, reproductive isolation or non-recognition of potential mates. Speciation can be classified as allopatric speciation, Sympatric speciation and parapatric speciation.