a) talc Most people are familiar with the mineral talc. It can be crushed into a white powder that is widely known as "talcum powder." This powder has the ability to absorb moisture, absorb oils, absorb odor, serve as a lubricant, and produce an astringent effect with human skin.
the answer on e2020 is "talc"; in the usa, we dont normally see "talcum powder" written on baby powder; but if you go to anywhere else in the world ( specifically asia) instead of calling it baby powder, most of the time, they called it talcum or talc powder.
sorry for making it confusing; i didnt want people to feel like i was copying the person below :)
if B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2 = 1. If 16% of mice are homozygous black , B ^ 2 =0 .16, meaning B = 0 .4 and b = 1 - 0.
