Question

Thickness of vitelline membrane in Drossophila is about

• A. 10$\mathring{A}$
• B. 30$\mathring{A}$
• C. 50$\mathring{A}$
• D. 60$\mathring{A}$

Answer 1

The correct option is B 30$\mathring{A}$

The vitelline membrane is the structure, which is directly adjacent to the outer surface of the plasma membrane of an ovum and is the innermost layer of eggshell. It is approximately 300 nm thick in Drosophila. Thus, the correct answer is option B.