Question

Which is most important in speciation ?
(a) Geographical isolation
(b) Reproductive isolation
(c) Ecological isolation
(d) Ethological isolation

Answer 1

Answer-

(b) Reproductive isolation

The mechanism of Reproductive isolation are a collection of evolutionary mechanism, behaviour and physiological processes critical for speciation.

Answer 2

Option B

Reproductive isolation is most important in speciation

Explanation:

• Reproductive isolation is uncommon in development because it is not a feature owned by segments of a single species, but a composite figure that is the collective attribute of a pair of species.
• Speciation demands that the two developing species be incapable to create viable offspring collectively or that they withdraw mating with features of the other group.  
• This composite and epistatic kind of procreative isolation ensures that speciation will not simply confer emanant genetic and phenotypic features not detected in comparisons of an only species.

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What do you understand by reproductive isolation how is this mechanism responsible for speciation?