Why do arteries need to be thick, muscular, and elastic? to make our bodies strong for movement to withstand the pressure of the blood that is being pumped by the heart to pull the blood back to the heart from all areas of the body to withstand changes in blood temperature

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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