Question

The diagram shows a section through the female reproductive system.

During pregnancy. Where does mitosis occur in the cells of the embryo?

	X	Y	Z
(a)	✓	✓	✓
(b)	✓	✓	x
(c)	✓	x	✓
(d)	x	x	✓

key : ✓ = takes place, x = does not take place

A. (a) B. (b) C. (c) D. (d)

Answer 1

This is because mitosis begins just after fertilization i.e. after formation of zygote. So mitosis is occurring at X and Z location but at Y the only ova are being prepared thus no mitosis while meiosis (reduction division) is there.