In Drosophila,the XXY condition results in a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In $Drosophila$,sex is determined by the ratio of $X$ chromosomes to the number of sets of autosomes ($X/A$ ratio). The presence of the $Y$ chromo

Vedclass · Accepted Answer

The $Y$ chromosome is active in sex determination in humans.

Vedclass · Answer

(A) In $Drosophila$,sex is determined by the ratio of $X$ chromosomes to the number of sets of autosomes ($X/A$ ratio). The presence of the $Y$ chromosome does not determine maleness in $Drosophila$; it is only required for male fertility. Thus,$XXY$ is a female.In humans,sex is determined by the presence of the $SRY$ gene located on the $Y$ chromosome. The presence of even a single $Y$ chromosome triggers the development of testes,leading to a male phenotype. Therefore,$XXY$ results in a male with $Klinefelter's$ syndrome. This confirms that the $Y$ chromosome is essential for sex determination in humans.

In $Drosophila$,the $XXY$ condition results in a female,whereas in humans,the same condition results in a male with $Klinefelter's$ syndrome. This proves that:

Similar Questions

$A$ man affected by a certain disease marries a normal woman. They have $8$ children ($3$ daughters and $5$ sons). All the daughters suffer from their father's disease,but none of the sons are affected. What type of inheritance can you suggest for this disease?

$A$ family has five girls and no son. What is the probability of having a son as the $6^{th}$ child (in $\%$)?

Holandric genes are

In which one of the following,gametogenesis takes place only by mitosis?

$A$ male child would be born to parents if

Vedclass Test Series

Exam Paper Generator

Online Exam Module