A member asked:

Is there any facts or cientific proof that supports the idea that when a man is at even age he produces only girl? i mean x chromosome? what chance is

2 doctors weighed in across 2 answers
Dr. Robert Killian answered

Specializes in General Practice

Myths: There is no science, no truth and no reality of any man of any age only producing sperm that will be female babies. That is not possible.

Answered 2/27/2014

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Myth: Many buy into such myths because the are right half the time, but there is no scientific proof this can or ever does actually happen.It is whatever sex chromosome the sperm carries that decides the sex of the fetus. The first one to complete the trip to fertilize the egg determines the babies sex.

Answered 6/15/2016

1.2k views

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