Hemophilia is an x-linked recessive trait. in a family, the mother knows she is a carrier and the father does not have the disease. the family is expecting triplets. they are worried about having boys that would have 50% chance of being affected. what is the probability of having one or more than one boy? consider two scenarios: if the triplets are monozygotic and if the triples are trizygotic

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.

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