Match following pair.
$x$ - human, $y$ - drosophila
$x$ -drosophila, $y$ - hen
$x$ - hen, $y$ - human
$x$ -drosophila, $y$ - human
$(a)$ 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.
In bugs and cockroaches, the sex determination takes place by
How is sex determined in various organism ? Give historical background of sex determination.
Determination of sex of a child depends upon
Describe haploid diploid sex determination system ?