The following is a complex pedigree for two traits, red hair and body hair. a.) What are the genetic basis of these traits. Are they related to each other.
b.) Do you think that the red hair alele is common or rare in the population as a whole?

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

The parents of an infant with newly diagnosed cystic fibrosis ask a nurse what causes the foul-smelling, frothy stool. what is the  best  response by the nurse?