Male Baldness Info

Baldness is a sex influenced trait. This means that although the gene allele for baldness is not carried on the X sex chromosome– it is autosomal, the expression of the gene is determined by sex. In males, baldness is a dominant trait, while in females it is recessive. If a bald man whose father and mother had hair marries a woman with hair and who has a father with hair and a mother who is bald, what are the genotypes of the man, his parents, the woman and her parents?
What is the probability of this couple having a boy who will be bald as an adult?
What is the probability of having a girl who will become bald?
Probability of a bald girl?
probability of a bald boy?

Ok, I am a 18 year old male who has patches and a big bald spot in the back of my head (not on the vertix).Now i don’t really care about it because i just get a bald fade haircut and its straight (T.I.’s Haircut).
But i want to know (before i go to the Dem.) what my cause of the bald spots. I thought it was “Trichotillomania” but i just found out that its a disorder of pulling hair and i don’t do that. I just do not know what it is. Is there such thing as baldness in early age??
Now i think i had Trichotillomania or something when i was 14 because i use to pull my eyebrows and eyelash because i thought it would grow back. But idk. I just have a little bit of hair my eyebrows and my eyelashes are growing back right now.
Right now im getting kinda scared because my vertix area is easily pulled. Like i was just pulling that area (dont have Trichotillomania) just to see if my hair is easily pulled out and it is.
Thank You for reading this and please help me