@moonbus saidhttps://www.healthline.com/health/male-pattern-baldness
Basic genetics: recessive traits only manifest when both alleles are recessive in an individual, and one inherits only one allele from a bald or hairy father. Hence, having bald grandfathers is a better indicator than having a hairy father of whether the man in question will develop baldness.
Check out link, if you are really interested.
-VR