you just said the answer. DNA is the trait, the sugars, the hereditary stuff. and one way to get all of to one place from another is by chromosomes.
example. when an animal mates, the offspring will have two chromosome strands. one of its father, one of its mother.
It depends on your weight and other factors
I would not say you have ASPD. I would say you simply should work on your people skills(maybe there is something on You Tube) andyou are very stubborn. Next time if you hurt a brother simply say sorry and ask if you can help them out. That does a lot.