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  4. The letter 'R' in EcoRI is derived from

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Q. The letter '$R$' in EcoRI is derived from

Biotechnology : Principles and Processes

Solution:

In EcoRI, capital letter $E$ comes from the genus Escherichia. The letters co are from the species coli. The letter $R$ is from $RY\,13$ (strain). The Roman number $I$ indicates that it was the first enzyme isolated from the bacterium E.coli $RY \,13$.