In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is/are :
(i) large chromosome (ii) small chromosome (iii) Y chromosome (iv) X chromosome

Options

A. (i) and (ii)
B. (iii) only
C. (ii) and (iv)
D. (iii) and (iv)

Answer

C

Explanation

In human males, one pair called the sex chromosomes are unpaired. Here, one is a normal-sized X-chromosome while other is a short Y-chromosome. Wornen have a
perfect pair of sex chromosomes, both called X.