What are mutations, and how can they affect proteins?

answer:

point mutations can cause serious changes to an organism if they change the way a protein works. a mutation in dna alters the mrna, which in turn can alter the amino acid chain. a base substitution may have three different effects on an organism's protein.

explanation:

c

explanation:

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;