One variety of wheat is resistant to disease. Another variety contains more nutirents of benefit to humans. Explain how a new variety of wheat with disease resistant and high nutrient value could be developed. In your answer, be sure to:

where is the

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.  

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