Delete the odd one:
$XO$ - Type
$XY$ - Type
$ZW$ Type
$OY$ - Type
In man, the composition of female destined zygote is
Sex of a human child is determined by
Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.
How is sex determined in various organism ? Give historical background of sex determination.
$(a)$ In humans, males are heterogametic and females are homogametic. Explain. Are there any examples where males are homogametic and females heterogametic ?
$(b)$ Also describe as to who determines the sex of an unborn child ? Mention whether temperature has a role in sex determination.