r/BeAmazed • u/GinaWhite_tt • 14d ago

Miscellaneous / Others Great moment between a father and a son.

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u/pinnipednorth 14d ago

MPB is linked to the X chromosome which is passed down from mothers. women have two X chromosomes (the second chromosome coming from the father) so it is less likely to be expressed, because the second chromosome can ‘hide’ (for lack of better term) a X chromosome carrying the marker. because men only have one X chromosome, if that X chromosome is carrying that marker, MPB will be expressed. so if your mom’s side of the family has a full head of hair, you might not wind up being effected by MPB

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u/Ok-Mathematician987 14d ago

My mom's male family all had it but my Dad's all keep full heads of hair till old age so this explains why I missed it.