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

Question

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

Accepted Answer

1. Grasshopper: Exhibits XO type sex determination. Males have only one X chromosome (XO) besides autosomes, whereas females have a pair of X-chromosomes (XX). Therefore, the XO condition determines the male sex .
2. Birds: Exhibit female heterogamety (ZW) and male homogamety (ZZ). Thus, ZZ determines the male sex, not female , .
3. Drosophila: Exhibits XY type sex determination where females are XX and males are XY .
4. Turner's Syndrome: While individuals with Turner's syndrome (XO) are sterile females, this is a chromosomal disorder (aneuploidy)  rather than a natural sex-determination mechanism like the XO type in grasshoppers.

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