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

Homozygous sex chromosomes (XX) produce male in Drosophila.

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Homozygous sex chromosomes (ZZ) determine female sex in birds.

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XO type of sex chromosomes determine male sex in grasshopper.

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XO condition in humans as found in Turner Syndrome, determines female sex.

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Solution

The correct option is B XO type of sex chromosomes determine male sex in grasshopper.
X/A ratio determines sex in Drosophila melanogaster. In the case of birds, they are heterogametic and has ZW chromosomes. XO type of sex chromosome determines sex in grasshopper.

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