Which of the following exhibits female heterogamety?

In which of the following is parthenogenesis observed?

$A$ fruit fly is heterozygous for a sex-linked gene. It is crossed with a normal female fruit fly. The specific chromosome for the male enters the egg in the ratio of ............. (in $: 1$)

$A$ man receives his $X$ chromosome from

The average ratio of male to female individuals based on $XX$ and $XY$ type of sex determination in the total human population is:

Gynandromorphs develop in Drosophila when the two cells in the two-celled proembryo have one of the following chromosomal sets: