Greg has five young daughters.One time when he went shopping with his five girls,a stranger came up to Greg and said,"Wow,five girls! What's the matter? Didn't your wife want sons?" In regard to the determination of sex,what was incorrect with the assumption of the stranger's question?
A) It assumes that the Y chromosome is the sex chromosome for a male.
B) The question assumes that the Y chromosome is a dominant allele.
C) It assumes that the female determines the sex of the child, when, in fact, it's the male.
D) It assumes that the Y chromosome is the sex chromosome for a female.

Question

Quizplus · Accepted Answer

The assumption made by the stranger is that the mother determines the sex of the child, which is not true. The father's sperm determines the sex of the child because it carries either an X or a Y chromosome. The mother always contributes an X chromosome to the offspring. So, it is incorrect to assume that the lack of sons is due to the mother's choice or decision.

Greg Has Five Young Daughters