Which statement best describes genetic material? a. genes are sections of proteins, which contains the codes for chromosomes
b. genes are segments of DNA, which is packaged in chromosomes
c. a chromosome contains a single DNA molecule, which contains one gene
d. DNA is made up of many chromosomes, each of which codes for a protein

the answer is b. glad to .

c.           is the correct answer

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.