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Does having a Boy or Girl Child can be determine by there Family History?

+9 votes

I heard from my friends that the having a boy child or girl child can be determine by there family history. Even in the research of Newcastle University by Mr. Gellatly stated that "Gene that is passed on from both parents, which causes some men to have more sons and some to have more daughters". How much true it is. Give some explanation?

posted May 1, 2016 by anonymous

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1 Answer

+1 vote

"The family tree study showed that whether you’re likely to have a boy or a girl is inherited. We now know that men are more likely to have sons if they have more brothers but are more likely to have daughters if they have more sisters. However, in women, you just can’t predict it," Mr Gellatly explains.

Men determine the sex of a baby depending on whether their sperm is carrying an X or Y chromosome. An X chromosome combines with the mother’s X chromosome to make a baby girl (XX) and a Y chromosome will combine with the mother’s to make a boy (XY).

The Newcastle University study suggests that an as-yet undiscovered gene controls whether a man’s sperm contains more X or more Y chromosomes, which affects the sex of his children. On a larger scale, the number of men with more X sperm compared to the number of men with more Y sperm affects the sex ratio of children born each year.

answer Jun 24, 2016 by Ati Kumar
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