How many different amino acids are found in humans?

Nine amino acids

hope it helps!

9

On the other hand, essential amino acids are required in the human diet as they cannot be synthesized by the body. There are nine essential amino acids including histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.