00:01
Which of these supports the hypothesis that viruses can cause cancer? a, virus and cancer cells both replicate rapidly.
00:10
B, genes regulate cell division are found in some viruses.
00:14
C, cellular dna has sequences related to viral sequences.
00:18
Or d, cancerous and normal cells share genetic sequences.
00:24
Okay, the correct answer is b.
00:26
Let's go through the wrong answers.
00:28
First of all, d has...
00:30
Nothing to do with the effects of viruses.
00:33
Of course, cancerous and normal cells share genetic sequences, apart from any mutations that have caused the cancer, and the buildup of the mutations as well, typically.
00:45
C, again, is unrelated to viruses actually causing cancer, just because they have related sequences is not enough.
00:54
Similarly, a, of course, they both replicate rapidly, but again, that doesn't link them.
01:00
It's just something they have in common.
01:02
So why is b the answer? so a lot of viruses replicate with the host cell...