Question

Cancerous cells can accumulate mutations more quickly for all the following reasons EXCEPT

A. a mutation in a cell proliferation gene.

B. a mutation that causes mistakes in mitosis.

C. a mutation in a DNA repair gene.

D. a mutation in a gene involved in DNA replication.

Answer 1

A is the answer.

Because there is found more proliferative growth in the cancerous cells. There is found enormous growth of tumor due to this proliferative gene. If the mutation is found in this gene, then there is not found proliferative growth. Hence the cell will acts as normal cell. That's why mutation is not found in a Cell proliferative gene.

Ther is found mutation in mitosis, DNA repair gene and gene involved in DNA replication. Because there is found more cell division due to this mutations.