Question

whai is the chromosome number in human ovum?
(a) 22+x. (b) 22+y

(c) 22+xy. (d) 22+xx

Answer 1

Human beings have a total of 46 Chromosomes.

Out of these, only 22 pairs are of homologous autosomal chromosomes.

The additional 23rd pair is made up of sex chromosomes X and Y.

The pair of sex chromosomes for females is XX whereas for males is Xy.

Therefore the human ovum contains XX sex chromosome plus an additional 22 pairs of the homologous autosomal chromosomes.

The correct answer is thus :

22 + XX.