What is a dominant and recessive allele

Explanation:

if this is for biology a dominiant and recessive allele are usually from genetics from doing the punnett square you find out if a person is going to get a dominant or recessive allele.. an example is someones hairline. the widows peak is a dominant trait meanwhile a straight hair line is recessive

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.