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(B) Allopatric speciation occurs when a biological population becomes geographically isolated from the parent population,leading to the evolution of n

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Mutations are helpful in allopatric speciation

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(B) Allopatric speciation occurs when a biological population becomes geographically isolated from the parent population,leading to the evolution of new species.$1$. Geographical isolation is a prerequisite for allopatric speciation.$2$. Mutations,along with natural selection and genetic drift,play a crucial role in the divergence of the isolated populations.$3$. While reproductive isolation eventually occurs,it is the result of the geographical barrier preventing gene flow.$4$. Adaptive radiation is a specific type of evolution where many species evolve from a single ancestor in a short time,often associated with allopatric speciation,but the most direct statement regarding the mechanism of allopatric speciation is that mutations contribute to the genetic divergence of these separated groups.

Which one of the following is correct with respect to Allopatric speciation?

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