Question

If sex index ratio in Drosophila is 0.33, the sexual phenotype of it is:

• A. Metamale
• B. Metafemale
• C. Female
• D. Intersex

Hint:

Drosophila's sex determination follows the X:A ratio principle. If X/A<0.5, it results in a metamale.

Answer 1

The Correct Option is A

Step 1: Understanding the Sex Index Ratio
- Sex determination in *Drosophila* depends on the X/A ratio (number of X chromosomes to autosome sets).
- A sex index of 0.33 indicates Metamale.