WAEC - Biology (1999 - No. 54)
Which of the following statements about sex determination is correct? At fertility
the probability of male to female offspring is 1/2
the Y chromosome of the father decreases the probability of having a male child to 3/4
the xx chromosome of the mother decreases the probability of having a female child to 3/4
the vigour of either parents determines the sex of the offspring
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