Question

which stage is the middle stage of speciation?
A . the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.
B . the populations are isolated and thus do not interbreed .
C . the populations become totally separated from one another .
D . the populations successfully interbreed .

Answer 1

The answer is B: The Populations as isolated and thus do not interbreed. 

Answer 2

The formation of the distinct species is speciation. In the middle step of speciation, the organisms get isolated and are not able to interbreed. Thus, option B is correct.

What is speciation?

Speciation is a process of evolution that results in the formation of new species. The original lineage of the organism gets separated and diverse when distinct species are formed.

Speciation occurs by separation, adaptation, and reproduction. The isolated species adapt to their new environment and evolve with new traits.

Therefore, in option B. the isolated species cannot interbreed in the middle step of speciation.

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