B:-Leukemia is the answer.
The DNA virus uses nucleus of the host to replicate it genetic material since it lack reverse transcriptase enzyme.The similarities between the DNA virus with human protein it make difficult to treat this virus without damaging the host cell.
while
RNA virus has reverse transcriptase enzyme which is used to replicate its genetic material, but it lack ability to check errors, which led to higher mutation rate.The transcriptase enzyme is used to make vaccine which is used to treat RNA virus
Answer:
your answer is true I believe
According to the cell theory, living things are composed of cells. Living things are capable of reproduction and two ducks can reproduce their own kind or their offspring starting from a single which was formed through the union of their reproductive cells. Now, the single cell formed still according to the cell theory has a capability to multiply itself to form as an offspring of the ducks.
