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Question

The cutting of DNA at specific locations became possible with the discovery of:

A
Ligases
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B
Restriction enzymes
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C
Probes
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D
Selectable markers
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Solution

The correct option is B Restriction enzymes
A restriction enzyme or restriction endonuclease is an enzyme that cleaves DNA into fragments at or near specific recognition sites within the molecule known as restriction sites.

Ligases help join DNA fragments, Markers help check for transformation and probes help in identifying gene of interest.

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