A baby’s sex is determined by the sperm at conception.
The egg always contributes an X chromosome.
A sperm carrying an X chromosome results in a girl (XX).
A sperm carrying a Y chromosome results in a boy (XY).
There is no guaranteed natural method to choose a baby boy.
Medical sex selection may be possible in some places through assisted reproductive technologies.
The legality and ethics of sex selection vary by country and clinic.
Consult a qualified fertility specialist for accurate information.