The sex in Drosophila text{ } melanogaster is | vedclass

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(D) In $Drosophila 	ext{ } melanogaster$, sex determination is based on the ratio of the number of $X$ chromosomes to the number of sets of autosomes

Vedclass · Accepted Answer

$X$ chromosomes and autosomes

Vedclass · Answer

(D) In $Drosophila 	ext{ } melanogaster$, sex determination is based on the ratio of the number of $X$ chromosomes to the number of sets of autosomes $(A)$.This is known as the Genic Balance Theory, proposed by $C.B. Bridges$.If the ratio of $X/A$ is $1.0$, the individual is female.If the ratio of $X/A$ is $0.5$, the individual is male.Therefore, both $X$ chromosomes and autosomes play a crucial role in determining the sex of the fruit fly.

The sex in $Drosophila \text{ } melanogaster$ is determined by

Similar Questions

Assertion : In humans,the gamete contributed by the male determines whether the child produced will be male or female.
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

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