41st B.P.S.C. (Pre) 1996
In respect of women, men can suffer more of colour blindness because-
aThey pass more through mental tensions
bThey live out of home relatively more
cThey have only one X-chromosome✓ Correct
dCommonly they have less fat
Explanation
Compared to women, men suffer more from colour blindness because women have two (XX) sex chromosomes. If one X carries the gene for colour blindness, the other normal X chromosome compensates for it. Thus, the woman generally acts only as a carrier and is not affected, whereas the man becomes affected.
general-science