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bearhunter [10]
2 years ago
6

Polio viruses contain DNA. The viruses in the polio vaccine have DNA in which the base sequence has several differences from the

base sequence in the normal polio virus. Suggest how this makes them unable to reproduce in the human body.
Biology
1 answer:
Radda [10]2 years ago
3 0

Answer:

The polio strains cannot reproduce because they are weakened.

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