This system relates to the process by which an organism replicates. Sexually reproduction usually involves male cells (sperm) meeting
female cells (eggs) to produce a fertilized egg or zygote.

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.