$A$ gene which suppresses the activity of another gene but does not lie on the same locus is called:

The application of the principles of genetics for the improvement of the human race is called ..............

Which of the following is incorrectly paired?

Mother and father both have blood group '$A$'. They have two children,one with blood group '$O$' and the second one with blood group '$A$'. They have:

$A$: Antlers in male deer are sex-influenced traits.
$R$: These are controlled by autosomal genes which are influenced by the sex of the bearer.

Select the correct option for the following statements:
$P - F_1$ generation shows traits of both parents.
$Q - F_1$ generation shows a new trait (intermediate).
$R - F_1$ generation shows only one of the two parental traits.
$\quad \quad P \quad Q \quad R$