In which of the following organisms is the structure $Male \rightarrow n$ and $Female \rightarrow 2n$ observed?

What is true in the case of honey bees?

Male heterogamety,which is essential for sex determination in new offspring,is observed in which of the following?

Which of the following conditions of gametes results in the birth of a normal human female child?

$A$ fruit fly is heterozygous for sex-linked genes and is mated with a normal female fruit fly. In what proportion will the male-specific chromosomes enter the egg cells (in $:1$)?

Select the incorrect statement.