The base height (shortest possible height) of a certain plant is 10 cm. two genes contribute to the height of the plant, and each dominant allele contributes 3 cm to height. if you cross a 10 cm plant (homozygous recessive for both genes) with a 22 cm plant (p1 cross) how many phenotypic classes will there be in the f2 generation?

it marks things for degradation via the proteasome. it alters there celluar location.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

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.