Female Drosophila is
(a) Smaller in size than male
(b) Larger in size than male
(c) Larger in size with shorter life span than male
(d) Having heteromorphic sex chromosomes

Options

A. Smaller in size than male
B. Larger in size than male
C. Larger in size with shorter life span than male
D. Having heteromorphic sex chromosomes

Answer

To solve the question regarding the characteristics of female Drosophila, we will analyze each option provided:

1. **Understanding Drosophila**: Drosophila melanogaster, commonly known as the fruit fly, is a model organism in genetic studies.

2. **Analyzing the Options**:
- **Option (a)**: "Smaller in size than male" - This is incorrect as female Drosophila are generally larger than males.
- **Option (b)**: "Larger in size than male" - This is correct. Female Drosophila are indeed larger than male Drosophila.
- **Option (c)**: "Larger in size with shorter lifespan than male" - This is incorrect. While females are larger, they typically have a longer lifespan than males.
- **Option (d)**: "Having heteromorphic sex chromosomes" - This is also correct, as females have two X chromosomes (XX) while males have one X and one Y chromosome (XY). However, the question asks for a characteristic of size, making this option less relevant.

3. **Conclusion**: Based on the analysis, the correct answer is **(b) Larger in size than male**.