Question

Why is reproductive isolation required for speciation to occur?

A. If populations can interbreed, they are considered one species.

B. If populations can interbreed, they do not exchange genetic information.

C. Reproductive isolation is not required for speciation because most different species can interbreed.

D. Reproductive isolation is not required for speciation because species are not defined by reproduction.

Answer 1

(a) if population can interbreed they are considered as a one species

i am not sure correct or not

Answer 2

Answer:

Reproductive isolation is required for speciation to occur because if populations can interbreed, they are considered one species

Explanation:

• Speciation is a process of evolution by which populations evolve and become a new species.
• Reproductive isolation is important for the speciation to occur because it involves all the evolutionary mechanisms, behaviors and physiological processes for the organisms that are necessary for speciation.
• Reproductive isolation provides some barriers like behavioural, mechanical or gametic that are necessary to maintain the integrity of a species and also to reduce gene flow between two or more related species.
• These barriers prevent the production of offspring when matting occurs between organisms of different species.
• Thus organisms of same species are allowed to interbreed to maintain integrity.

Thus, option A is correct.