Where did I get my hair loss problem from (with photos)?

I’m 19 and stared at what seems to be a solid Norwood 2 with thick, dense hair. My maternal grandfather is currently a Norwood 3/3.5, thick hair nonetheless so considered very good for his age(66). I hope to be taking after him however, my grandma’s brother (great uncle) suffered from hair loss at around 40-50. What I’m wondering is whether my grandma could’ve inherited the gene through her family, passed it onto my mother of whom passed it to me. Would this be possible? My mum doesn’t have any brothers either, only sisters so there’s no way of identifying if the gene is present in my family.

Sometimes it is difficult to genetically trace where you are getting your hairline recession from.  A receding hairline can lead to future balding. The balding genes can skip multiple generations, therefore you may not be able to tell where you got it from. If this continues to be a problem, see a doctor for the drug Finasteride.  It could reverse your receding hairline, something that has a good possibility in someone your age. Since your great uncle suffered from hair loss, then you have proof that the gene does exist in the family line.