Q7 of 85 Page 266

What are the two causes of speciation between two population?

The two causes of speciation are-

(i) Genetic drift -: If the DNA changes are severe enough, such as a change in the number of chromosomes, eventually the germ cells of the two groups cannot fuse with each other.


(ii) Natural selections:-If a new variation emerges in which females are only able to mate with few males due to their specific trait. This allow natural selection.


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