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What is CRISPR?Group of answer choicesSequences derived from viral DNA fragmentsA gene-editing toolA bacterial defense mechanismAll of these answers
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What is CRISPR?Group of answer choicesSequences derived from viral DNA fragmentsA gene-editing toolA bacterial defense mechanismAll of these answers

User MatejG
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CRISPR is a family sequences derived from viral DNA fragments, which is used by bacteria as a defense mechanism against bacteriophages. Together with the Cas9 enzymes, CRISPR is also a gene-editing tool. Therefore, the correct answer is the last option.

User Cameron Booth
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