Question

Each restriction endonuclease recognizes a .......... sequences in the DNA.

• A. Nucleotide sequence
• B. Nucleoside sequence
• C. Palindromic nucleotide sequence
• D. Both A and B

Answer 1

The correct option is C Palindromic nucleotide sequence

• Restriction enzymes cut double-stranded DNA at specific locations based on the pattern of bases found at those locations.
• These enzymes predictably cut both strands because the sequences they recognize are palindromic.
• Palindrome is a segment of double-stranded DNA in which the nucleotide sequence of one strand reads in reverse order to that of the complementary strand.
  So, the correct answer is 'Palindromic nucleotide sequence'