Exo means outside
So planets outside our solar system
DNA is from our generation, all to the beginning, therefore we may inherit traits of our ancestors.
<span>The Answer is "R" group.
Amino acids are organic compounds and have two carbon bonds. The three parts of an amino acid are the amino group, the carboxyl group, and the R group. In amino acids, alpha carbon is bonded to hydrogen atom and the other groups. That R group is different in amino acids and shows how the protein monomers are different from each other. </span>
Rachel is a frail and fragile girl who is prone to injury and bruising William Sheldon would most likely have classified her body as a ectomorph.
William classified people according to their body into three types:
1. Endomorphs- rounded and soft, with comfortable and extroverted personality,
2. Mesomorphs-square and muscular, with dynamic and aggressive personality,
3. Ectomorphs-thin and fine-boned with introverted, and sensitive personality.
