NEET 2006 Biology question

Restriction endonuclease -

(1)Cuts the DNA molecule randomly
(2)Cuts the DNA molecule at specific sitesCorrect
(3)Restricts the synthesis of DNA inside the nucleus
(4)Synthesizes DNA

Answer: (2)

Solution

Restriction endonucleases are 'molecular scissors' of bacteria that recognise specific palindromic nucleotide sequences in DNA and cut the DNA at or near those specific sites (e.g. EcoRI cuts

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Question ID VK-089711