If the egg fuses with a Y chromosome-bearing sperm, the child produced is a female.
Determination of sex in human being is determined by the sex chromosomes (XX in females & XY in male). If a sperm carrying X' fuses with ovum, female offspring is produced. If sperm with Y fuses with ovum, male offspring is produced. Hence sex chromosomes of male parent are involved in determining the sex of offspring.
(i) A mother-in-law blames her daughter-in-law for producing three grand-daughters. As a health worker in the neighbourhood, what would be your role in such a situation?
The sperms bearing X chromosome reach the egg faster than the sperms bearing Y chromosome.