How does reproductive isolation cause speciation?
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a. it reduces gene flow.
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b. it prevents divergence.
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c. it allows interbreeding.
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d. it stops adaptive radiation.

Reproductive isolation causes speciation by reducing the gene flow

Explanation:

T Dobzhansky introduced the isolating mechanisms. It plays vital role in biological species concept. The problem with isolation is that it combines traits that reduce flow of genes whose example is choice for mating or fertilizer barrier.

Reproductive isolation is known as lack of mixture in their genes. Isolating mechanism can be broadly divided into Pre-isolating mechanism and Post-isolating mechanism. It doesn’t only affect the flow of gene and it also affects the natural selection

mammal

explanation:

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.