Easy multiple
which of the following explains why normal cells grown in a petri dish tend to stop growing once they have covered the bottom of the dish?
a. the cells lack cyclin
b. the petri dish speeds up cell growth
c. contact with other cells stops cell growth
d. most cells grown in petri dishes have a defective p53

Describe how alleles and genes are related

What substance acts to prevent sudden ph changes in bodily fluids?

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43