No shampoo at all? gross conditioner isn’t going to get all that dirt out of your scalp. What you heard is probably don’t shampoo your hair everyday, which I agree with, shampoo strips the natural oils from your hair. Use co wash and once or twice week shampoo and condition your hair.
If you go the no shampoo way ( I tried it before, only washed with water for a few months). You have to stick it out for a few weeks which is hard to do. Funnily enough the hair starts to appear really clean and smooth, and does not smell bad either.
However you have to be willing to overlook that greasy period in between.
Yep the primary genes for male pattern baldness are on the androgen receptor which falls on the X chromosome passed on from mother to son.
However some of the genes from the father also play a role in terms of how the genes interact with each other. Meaning that some androgen receptors X chromosome are 100% protection against baldness despite the fathers contribution, whilst other androgen receptors can interplay with the fathers genetic contribution.