Question

Drosophila melanogaster possesses ____________________.

• A. $3$ pairs autosomes $+1$ pair sex chromosomes
• B. $2$ pairs autosomes $+2$ pairs sex chromosomes
• C. $1$ pair autosomes $+3$ pairs sex chromosomes
• D. $2$ pair autosomes $+1$ pair sex chromosomes

Answer 1

The correct option is A $3$ pairs autosomes $+1$ pair sex chromosomes

Drosophila melanogaster is a species of fly in the family Drosophilidae. The species is known generally as the common fruit fly or vinegar fly. D. melanogaster is typically used in research because it can be readily reared in the laboratory, has only four pairs of chromosomes, breeds quickly, and lays many eggs. It has only four pairs of chromosomes – three autosomes, and one pair of sex chromosomes.

So, the correct answer is '3 pairs autosomes +1 pair sex chromosomes'.