Question

Question 7
The maleness of a child is determined by

(a) the X chromosome in the zygote
(b) the Y chromosome in the zygote
(c) the cytoplasm of germ cell which determines the sex
(d) sex is determined by chance

Answer 1

(b) the Y chromosome in the zygote

All children will inherit an X chromosome from their mother regardless of whether they are boys or girls. Thus, the sex of the children will be determined by what they inherit from their father. A child who inherits an X chromosome from her father will be a girl and one who inherits a Y chromosome from him will be a boy.