Which one of the following conditions correct | vedclass

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Question

$XO$ type of sex chromosomes determine male sex in grasshoppers. This type of sex-determination comes under $XX - XO$ type. It is common in cockroache

Vedclass · Accepted Answer

$XO$ type of sex chromosomes determine male sex in grasshopper

Vedclass · Answer

$XO$ type of sex chromosomes determine male sex in grasshoppers. This type of sex-determination comes under $XX - XO$ type. It is common in cockroaches, grasshoppers and bugs. The female has two homomorphic sex chromosomes $X X$ and is homogametic. It produces similar eggs, each with one $X-$ chromosome. The male has one chromosome only and is heterogametic. It produces two types of sperms-gynosperms with $X$ and androsperms without $X$.

Other statements can be corrected as follows

In birds, the females are heterozygous and represented as $ZW.$

Female sex in humans is represented as $XX.$

In Drosophila, males are heterogametic, i.e, $XY.$

Which one of the following conditions correctly describes the manner of determining the sex?

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