Look at the men on your mother's side of the family to see if you are at risk for becoming "follicularly challenged." The gene for baldness is on the X chromosome, which you can only get from your mother. There's no corresponding gene on the Y chromosome, so if you get the bald gene from your mom, you will go bald. But [unless your mom is bald] she probably only has one copy of the bald gene (the one on her other X chromosome being the normal or "hairy" gene), so you only have a 50% chance of inheriting it if she is a carrier.
Bottom line: if your mother's brothers all have a full head of hair, you probably don't have much to worry about. Though obviously it depends on how many brothers she has - sample size, etc.
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