A male child would be born to parents if
Father is healthier than mother
Genetic chromosomal constitution of child is $XX$
Mother feeds well during pregnancy
Genetic chromosomal constitution of child is $XY$
A couple has $6$ children-$5$ are girls and $1$ is boy. The percentage of having a girl on next time is
How is sex determined in human beings?
$(a)$ 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.
Determination of sex of a child depends upon
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.