Biology Question: Errors in copying DNA?

Question

Errors in copying DNA can be beneficial because...

a) chemicals sometimes damage DNA.
(b) many proteins are imperfect.
(c) some base sequences cause cancer.
Both (a) and (c).
(a), (b), and (c).

The only benefit my professor said is that errors in copying DNA create genetic variation (an evolutionary aspect)
It's not one of the answers, so I'm confused.

Can anyone help me? Thanks!!

Answer 1

That is a horrid question. The least wrong choice is B.

Answer 2

I suggest you put a different answer. This is what I got when I put that answer.



Incorrect; correct answer displayed:



Correct! Cells use triphosphates because it takes energy to link nucleotides. A chain of three phosphates is rich in energy.

Answer 3

There is no good answer there but the answer that is the least wrong is b. I'm guessing the question should actually read 'harmful' in which case the answer would be c.

Answer 4

I can assure you it is: (a), (b), and (c).

Answer 5

(a), (b), and (c).