Which of these is true about secondary contact? A. Hybrids are always infertile. B. Hybridization can...

Which of these is true about secondary contact?

A. Hybrids are always infertile.

B. Hybridization can result in new species.

C. Hybrids typically resemble neither parent species.

D. Reinforcement can decrease differences between parent species.

Solutions

Expert Solution

Answer- B. Hybridization can results in new species

Explanation-

1. In secondary contact the allopatrically distributed populations are geographically reunited. Due to reunion genes are exchanged between two populations but only when the population reunion before little or no reproductive isolation.

2. During the reunion hybrids are formed that are able to survive and reproduce but they cannot back cross with either of the parent thus it becomes new species.

False about secondary contact-

A. Hybrids are always infertile- hybrids are fertile and can reproduce

C. Hybrids typically resemble neither parent species- as hybrids are formed by reunion of two populations thus hybrids resemble their parents

D. Reinforcement can decrease differences between parent species- reinforcement increases reproductive isolation and increases difference between parent species and hybrid. This is because two populations already have some reproductive isolation.

gladiator answered 2 weeks ago

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