Read the following statement for restriction enzyme and choose option which have only correct ones –
(1) Restriction enzymes belong to a large class of enzymes called nucleases.
(2) Restriction enzymes are of two kind exonuclease and endonuclease.
(3) Restriction enzymes are so called because these only identify particular nucleotide sequence.
(4) More than 900 restriction enzymes have been isolated from 230 strains of bacteria
Text Solution
Verified by ExpertsA
Statement (1) is true: They belong to the nuclease family.
Statement (2) is true: They are split into exonucleases and endonucleases.
Statement (3) is false: They got the name "restriction" because they restrict virus growth in bacteria, not because of how they find DNA sequences.
Statement (4) is true: Scientists have found over 900 types from 230 types of bacteria
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