Question

In the ZO–ZZ type of sex determination, the male (AA+ZZ) produces:

Options

• Two kinds of sperm, A+Z and A+W

• One kind of sperm, A+O

• Two kinds of sperm, A+Z and A+O

• Only one kind of sperm, A+Z

Answer 1

In the ZO–ZZ type, the male is ZZ (homogametic) and produces only A+Z sperms. The female is ZO (heterogametic) and produces A+Z and A+O ova; fertilization of these ova determines offspring sex.