Question

In a human foetus the limbs and digits develop after

• A. First trimester
• B. 8 weeks
• C. 12 weeks
• D. 5th month

Answer 1

Answer: (B)

8 weeks

• In humans, the zygote gets cleaved rapidly to form a ball of cells which undergoes gastrulation and forms three germ layers.
• The three germ layers are then subjected to organogenesis which leads to the development of organs.
• After 8 weeks of pregnancy or by the end of second month limbs and digits develop in the foetus.
• Thus, the correct answer is an option (B).