system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: does male baldness really derive from his mother's father or are there other factors involved? Is there any way to slow or stop the balding process?
gpt
Answer to first question: from your father and your mother. The 'bald' gene is dominant for males and recessive for women. Everybody has a gene pair, for example aB (the dominant gene is capitalized). 

If you are male, you will be bald if you have one of the following gene combinations (the 'bald' gene is the letter B in this case): aB, Ba and BB. For woman, only one combination is causing baldness: bb. 

If your father is not bald, that means he has the gene pair aa and will give you the a-gene.

But in the case your father is bald, he will either have Ba, aB or BB and you can get either an a-gene or a B-gene from your father and you'll have (without research to the actual gene-pair) a 66% chance of becoming bald without even looking at your mother's genes. (Ba + aB + BB = 4 B's, 2 a's). If your father should have BB, you'll always get a B from him and you will always become bald.

This is the same for your mother: if her father was bald, she got a 66% chance to be the carrier of the b(bald)-gene.

On your second question: Nope.