Why do some genes get passed on but not others?

Researchers found that naturally occurring changes to these proteins, which affect how they control genes, can be sustained from one generation to the next and so influence which traits are passed on.

Explanation:

Explanation:

because the child gets that trait from the other parent

for example, mom has blue eyes, dad has brown eyes, kids eyes are brown.

the blue eye genes was passed on but it was dominated by the brown eye gene