Which of the following statements about sex determination is correct? At fertility
-
A.
the probability of male to female offspring is 1/2 -
B.
the Y chromosome of the father decreases the probability of having a male child to 3/4 -
C.
the xx chromosome of the mother decreases the probability of having a female child to 3/4 -
D.
the vigour of either parents determines the sex of the offspring