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Find out the incorrect statement from the following.

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In XO and XY type of sex determination males produce two different types of gametes.

Female Drosophila has a pair of X-chromosome besides autosomes.

Drosophila and human beings are examples of male heterogamety.

Female birds produce only one type of eggs.

answer is D.

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Detailed Solution

Female (ZW) birds produce two type of eggs. They are heterogametic. Half containing Z chromosome and another half containing W chromosomes. Males (ZZ) on the other hand produce only one type of sperm with Z chromosome.

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