题目内容

1只会打鸣的母鸡与1只正常的母鸡交配，后代产生怎样的性别比例？已知无Z染色体的卵是死蛋，不能孵化。

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1t can be inferred from the text that _________ .
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[ C] television is more popular than electronic games
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[ A] How often; borrow
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[ A] to be understood
[ B ] to understand it
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