Which human organ system has ovary

The female reproductive system.

Explanation:

The ovary is an organ found in the female reproductive system

Hope this helps :)

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex