STD 12 - 7. human health and disease — BIOLOGY STD 12 Science — Question

Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

$i$. Birth control pills are likely to cause cardiovascular problem

$ii$. A woman who substitutes or takes the place of the real mother to nurse to embryo is called surrogate mother

$iii$. Numerous children have been produced by in vitro fertilisation but with some abnormalities

$iv$. Woman plays a key role in the continuity of the family and human species

$v$. Foetal sex determination test should not be banned