Which of the following is responsible for sex determination in chicks?

$A$: Holandric traits are passed from one generation to the next generation.
$R$: These traits appear more frequently in one sex than in other.

In $Drosophila$,sex determination is controlled by:

The sex in $Drosophila \text{ } melanogaster$ is determined by

In humans,sex determination is controlled by which of the following?

Organism with male heterogamety $- P$
Organism with female heterogamety $- Q$
$I -$ Human,$II -$ Bird,$III -$ Drosophila,$IV -$ Grasshopper
Select the correct option for $P$ and $Q$.
$\quad P \quad\quad Q$