Answer:
It could be embreology. (I think i spelled that wrong)
Explanation:
It is a way to compare the embreos of two species to see the similarities between the two. If there are similarities then they have a common ancestor. If they don't have similarities then they arent from the same family.
Answer:
2.it has gained extra electron
Chromatin and histones are found ind DNA-protein.
Hope this helped=)
Amino acids is the answer
