Sex chromosomes in chickens are

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Sex chromosomes in chickens are

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ZO in females and ZZ in males

ZW in females and ZZ in males

XX in females and XO in males

ZZ in females and ZW in males

answer is B.

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Detailed Solution

The type of sex determination in fowls is ZW-ZZ type. The karyotype of the female is AAZW and that of the male is AAZZ. The female is heterogametic and the male is homogametic. The female produces two types of ova (AZ, AW) and the sex of the offspring depends on the type of fertilising ovum.

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