In birds, which statement correctly describes the usual sex chromosome arrangement?
Correct answer: A. Males are ZZ and females are ZW
- A. Males are ZZ and females are ZW
- B. Males are ZW and females are ZZ
- C. Males are XX and females are XY
- D. Males are XY and females are XX
Explanation
Birds generally have ZZ males and ZW females. Thus, the female is the heterogametic sex because her eggs carry either a Z or a W chromosome.
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