Please someone help me please (The codon CUU codes for the amino acid leu which is short for leucine. Which change in base pair would not affect the protein chain?)

eukarya because is is like alche and b is bacteria and d is animals

explanation:

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.  

answer; synapse;