Question

When will sex determination in human take place?

• A. During fertilization.
• B. When fertilized ovum takes place.
• C. During sexual intercourse.
• D. During fission of unfertilized egg.

Answer 1

The correct option is A During fertilization.

Chromosomal sex determination is carried out at fertilization. This is done based on the presence or absence of the Y chromosome. Either the X or Y chromosome from the sperm fuses with the X chromosome of the egg and so females have XX and males have XY.

So, the correct option is option A.