Restriction enzymes cut DNA at specific sequences called what?

Restriction enzymes cut DNA at specific sequences called what?

• A. Promoters
• B. Exons
• C. Recognition sites
• D. Codons

Answer: (C)

Restriction enzymes work by recognizing specific DNA sequences and cutting at those sites. The sequences they recognize are called recognition sites (also known as restriction sites). These sites are often palindromic in double-stranded DNA, and the enzyme cuts within or near the site to produce fragments with blunt or sticky ends. Promoters are regulatory regions for transcription, exons are coding portions of genes, and codons are triplets of nucleotides in mRNA that encode amino acids. So the term that best fits the sequences targeted by restriction enzymes is recognition sites.

Restriction enzymes work by recognizing specific DNA sequences and cutting at those sites. The sequences they recognize are called recognition sites (also known as restriction sites). These sites are often palindromic in double-stranded DNA, and the enzyme cuts within or near the site to produce fragments with blunt or sticky ends. Promoters are regulatory regions for transcription, exons are coding portions of genes, and codons are triplets of nucleotides in mRNA that encode amino acids. So the term that best fits the sequences targeted by restriction enzymes is recognition sites.