Multiple choice Which of the following is a correct statement? A girl becomes pregnant if she looks at boys during menstruation. A mother is responsible for the sex of her child. A father is responsible for the sex of his child. The legal age for marriage is 18 years for girls and boys. Reveal answer Fill a bubble to check yourself C Correct answer Explanation A father is responsible for the sex of his child because he is heterogametic and can produce two types of gametes; one with a X chromosome and the other with a Y chromosome.