The incidence of cystic fibrosis, a recessive genetic disorder in the caucasian population of united states, is 1 in every 2,500 individuals. find the number of heterozygous carriers. (p + q = 1, p2 + 2pq + q2 = 1) a.0.0329 b.0.0254 c.0.045

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Which of the following typically characterizes a tropical rainforests

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?