Question

How many cleavages are completed in 16 celled stage of egg?

• A. 3
• B. 4
• C. 8
• D. 12

Answer 1

Answer: (B)

4

Initially, the egg divides and gives two cells (first cleavage). The two cells then divide giving four cells (second cleavage). These four cells divide and each cell gives rise to two cells thereby total coming to eight cells (third cleavage). These eight cells divide (each giving rise to two cells) to form 16 cells (fourth cleavage).
Thus, the correct answer is option (B).