NEET 2001 Biology question

Which of the following cut the DNA from specific places : -

(1)Restriction endonuclease (EcoRI)Correct
(2)Ligase
(3)Exonuclease
(4)Alkaline phosphate

Answer: (1)

Solution

Restriction endonucleases (e.g. EcoRI) recognise specific palindromic nucleotide sequences and cut the DNA at or near these sites, so (1) is correct. DNA ligase joins DNA

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Question ID VK-088848