Asked by Joscelyn Riddles on Jun 12, 2024
Verified
Extrinsic postzygotic isolation is most likely when
A) parental populations are adapted to similar environments.
B) parental populations are adapted to divergent environments.
C) genetic drift is strong.
D) gene flow between parental populations is high.
Extrinsic Postzygotic
Refers to factors external to the zygote that affect the survival and reproduction of hybrids between different species, populations, or genetic backgrounds.
Genetic Drift
A mechanism of evolution where random changes in the frequency of alleles within a population occur, often having a significant impact on smaller populations.
- Identify the various types of reproductive isolation mechanisms and categorize them into either prezygotic or postzygotic sections.
Verified Answer
BH
Bianca HernandezJun 12, 2024
Final Answer :
B
Explanation :
Extrinsic postzygotic isolation occurs when offspring resulting from the mating of individuals from two different populations are less fit because they inherit a combination of genes that is not well-suited to either parent's environment. This is most likely when the parental populations are adapted to divergent environments, as the hybrid offspring may not be well adapted to either environment, leading to reduced survival or reproductive success.
Learning Objectives
- Identify the various types of reproductive isolation mechanisms and categorize them into either prezygotic or postzygotic sections.
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