The prezygotic barriers that prevents two separate species from producing offsprings are as follows:
Mechanical Isolation - is the incompatibility of sexual organs. It may be the shape of the reproductive organs not being compatible, or size differences that prohibit the individuals from coming together.
Temporal Isolation - The timing of when females are fertile leads to temporal isolation. Similar species may be physically compatible but may still not reproduce due to mating seasons being different times of the year. If the females of one species are fertile during a given month, but the males are not able to reproduce at that time of the year, then there will be reproductive isolation between the two species.
Discuss in some detail three prezygotic barriers preventing two separate species from producing offspring.
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