Teaching UP TGT Mock Test Series 2025 General Science Biology Genetics and Evolution

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

1
In birds homozygosity (ZZ) determine female sex
2
XXY condition in humans as found in Turner's syndrome tendency of female sex
3
XX type of sex chromosome determine female sex in grasshopper
4
Homozygous sex chromosomes (XX) produce male Drosophila
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