Question

State whether the following statement is true or false.

In Drosophila, the Y-chromosome does not determine ‘maleness’, but is necessary for fertility.

Answer 1

This statement is true.

Explanation:

In Drosophila, the Y-chromosome does not determine maleness; instead, maleness is determined by the presence of one X and one Y chromosome (XY), but the Y-chromosome itself is essential for male fertility. Thus, males are XY and females XX, but the Y chromosome’s role is primarily linked to fertility rather than sex determination per se.