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Observe the figure given below and select the right option for A and B with reference to their determination of sex

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A is homogametic, B has two similar sex chromosomes

B is heterogametic, A has two dissimilar sex chromosomes

A has two dissimilar sex chromosomes, B is homogametic

A has two similar sex chromosomes, B is heterogametic

answer is D.

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Detailed Solution

Female heterogamety is observed in birds. A is cock and so has two similar sex chromosomes (ZZ), B is hen and so is heterogametic (ZW).

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