Determination of sex of a child depends upon
Nature of sperm
Nature of egg
Health of father
Age of mother
How is sex determined in various organism ? Give historical background of sex determination.
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.
Select the incorrect pair
A woman has an $X$-linked condition on one of her $X$ chromosomes. This chromosomes can be inherited by
Which one of the following conditions correctly describes the manner of determining the sex?