Two Bird Species (In Which Females Are Heterogametic and Males

question 15

Multiple Choice

Two bird species (in which females are heterogametic and males are homogametic) exhibit postzygotic isolation in that half of the hybrid offspring formed between them are sterile. If Haldane's rule applies here, then the individuals that are sterile are likely to be

• A) female.
• B) male.
• C) young.
• D) old.

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