What molecule begins dna replication?
a. dna polymerase
b. helicase
c. rna polymerase
d. mrna

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.

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

In "the pig," what is the main effect that the piglet initially has on kibuka?