Which of the following statements are not true regarding re…

Biology NEET Previous Year Question Paper NEET 2026 Previous Year Question Paper Single Correct MCQ

Published on: August 13, 2026

Which of the following statements are not true regarding restriction endonucleases?

They are called molecular scissors.
and (E) only
and

These are the enzymes responsible for restricting the growth of bacteriophages in E. coli.
only

They cut the DNA only at the center of the palindromic sites.
and

They remove nucleotides only from the ends of DNA fragments.
(E) They recognize specific palindromic base-pair sequences.
Choose the answer from the options given below :
only and (E) only

Text Solution

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The correct answer is:

False: They usually cut slightly away from the center of the palindrome to create sticky ends.

False: Removing nucleotides from the ends is the job of exonucleases; endonucleases cut within the DNA.

, , (E): These are True (molecular scissors, phage defense, and palindrome recognition).

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