What are abnormalities in the body caused from?

[Anonymous]

I'm 16, all of my adult teeth have came through. Except for the one tooth to the right of my two front teeth. A wile ago my canine tooth came through the middle of this gap, and pushed that baby tooth in the position of where my canine should be.

What are these types of problems caused from? Was my father exposed to too much radiation? Are my genes f***ed? Why hasn't evolution and sexual selection killed these traits off? And why are there so many ugly people in this world (no offense to anyone that thinks they are ugly, I think am pretty ugly so you can go ahead and call me that)? I thought sexual selection would have stopped this too.

Are genetic problems caused by previous in-breeding? I have no clue.

[soxroccer09]

It may not be so much genetic as due to growth. this is going to sound weird but did you suck you thumb as a baby? I only ask that because I did and it screwed up my teeth big time. Since my thumb was always in my mouth they grew in really weird. And sexual selection mostly hasn't gotten rid of ugly people because two ugly people could get together and have ugly children. Or someone who thinks they are ugly, and is really moderately attractive, could get together with someone who really is ugly and have kind-of ugly children. And in-breeding only magnifies the opportunity for genetic abnormalities to occur because if one person has a particular gene and they have a child with someone who has that gene as well because they are related then there is more of a chance that the child will have that gene. Your teeth are most likely not a result of inbreeding or radiation. Sometimes stuff like that happens. Maybe go see an orthodontist or talk to your dentist about it if it really bothers you.