Check all answers that apply. instructions for making proteins are stored in
a. dna.
b. rna.
c. mitochondria.
d. cell membranes.

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 codon is the code for the amino acid histidine (his)?

An easy way to calculate the amount of energy available at each level is to what?