in a sample of yeast DNA, 30% of the bases are adenine (A). What percent of the bases would you predict to be cytosine (C)?

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.

Explain two reasons you think it is important for scientists to search for new ways to treat cancer

Identify the missing parts of the carbon cycle