There are nearly 30 different disorders of sexual development. who can have these disorders? there are nearly 30 different disorders of sexual development. who can have these disorders? people with either xx or xy chromosomesonly people with xy chromosomesonly people with xx chromosomespeople with neither xx nor xy chromosome

Option A

Explanation:

Both the X and Y chromosome are sexual chromosomes with "XX" representing the gamete of a female sex of an individual and "XY" representing the gamete of a male sex of an individual.

Since these two "X" and "Y" chromosome are sex chromosome, there can be no disease that is defined by any other chromosome set including "YY" as well.

Hence  option A is correct

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.