Question

In a human, how many chromosmes are present in :
(a) a brain cell?
(b) a sperm in the testes?
(c) an egg which has just been produced by the ovary?
(d) a skin cell?
(e) a fertilised egg?

Answer 1

(a) In a brain cell in a human has 46 chromosomes.

(b) A sperm in the testes has 23 chromosomes.

(c) An egg which has just been produced by the ovary has 23 chromosomes.

(d) A skin cell has 46 chromosomes.

(e) A fertilised egg has 46 chromosomes.