In mice black fur coat is dominant over brown but mice with two alleles for block for a color were albino which pattern of inheritance was exhibited

I am going to say the term is epistasis

meaning in layman's term: a gene is suppressed for one generation and then shows up later on down the road if the mice keep producing little mice.

Hopefully this helped and good luck.

cell regulation is conducted by special proteins.

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.