Use the key for the following crosses: D = Dimples
H = curly hair
d = no dimples
h = straight hair
1. Cross a man with DdHh with a woman ddHh.
1. What is the phenotype of the man?
2. What is the phenotype of the woman?

this transfer is call conjunction

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

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.