Q. 64.0( 6 Votes )

In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are

I. large chromosome

II. small chromosome

III. Y-chromosome

IV. X-chromosome
A. (i) and (ii)

B. (iii) only

C. (iii) and (iv)

D. (ii) and (iv)


Answer :

In human beings, there are 23 pair of chromosome, out of which one pair is sex chromosome. In males, there are two types of sex chromosomes-X and Y. In males, all chromosomes are paired except sex chromosomes. Hence, normal sized X chromosome and small sized Y chromosome are unpaired.

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