20 points ! multiple choice

Biology

2 answers:

Fynjy0 [20]3 years ago

5 0

Answer:

Explanation:

Key points:

- Cells have a variety of mechanisms to prevent mutations, or permanent changes in DNA sequence.

- During DNA synthesis, most DNA polymerases "check their work," fixing the majority of mispaired bases in a process called proofreading.

- Immediately after DNA synthesis, any remaining mispaired bases can be detected and replaced in a process called mismatch repair.

- If DNA gets damaged, it can be repaired by various mechanisms, including chemical reversal, excision repair, and double-stranded break repair.

that's from khan academy^

Flura [38]3 years ago

3 0

The proofreading new DNA strands cuz ur prevents mistakes

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$20$ percent

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