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Biotechnology Principles and Processes question

2022 · Q3
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Biotechnology Principles and Processes question

2022 · Q3

NEETBiologyBiotechnology Principles and ProcessesMCQ+4 / −1

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : When a particular restriction enzyme cuts strand of DNA, overhanging stretches or sticky ends are formed.

Reason (R) : Some restriction enzymes cut the strand of DNA a little away from the centre of palindromic site.

In the light of the above statements, choose the correct answer from the options given below :

  1. A
    (A) is not correct but (R) is correct
  2. B
    Both (A) and (R) are correct and (R) is the correct explanation of (A)
  3. C
    Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  4. D
    (A) is correct but (R) is not correct
View written solutionFree

Correct answer: B

Option (b) is the correct answer because when restriction enzymes cut the strand of DNA a little away from the centre of the palindrome sites, but between the same two bases on the opposite strands, then single stranded portions are left at the ends. These overhanging stretches on each strand are called sticky ends.

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