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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