Guinea pigs can have brown or white fur. the allele for brown is dominant to the allele for white.
what would be the phenotype of a guinea pig that is bb?
a. brown
b. tan
c. white
d. none of the above

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.