in what depends upon the child to be a girl or a boy?i thought in the chromosones of the father but i read an article on the internet that it depends on the way the mother eats before the...

in what depends upon the child to be a girl or a boy?

i thought in the chromosones of the father but i read an article on the internet that it depends on the way the mother eats before the pregnancy.

thank you

Asked on by tedua

2 Answers

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hart379 | High School Teacher | (Level 2) Adjunct Educator

Posted on

The sex of a baby is determined soley on the chromosomes that the baby recieves.  The mother supplies the egg and the father supplies the sperm.  All normal eggs have one X chromosome.  Fifty percent of normal sperm have one X chromosome and the other fifty percent of normal sperm have one Y chromosome.

A normal baby will end XX if the sperm that fertilizes the egg carries an X.  A normal baby will end up with XY if the sperm that fertilizes the egg carries a Y.

XY = boy

XX = girl

 

The way the mother eats has no bearing on the determination of the sex, but it can affect chances of conceiving and the development of the baby.