Question:
Given below are two statements.
Statement I - The recognition sites of RENs are 4-8 nucleotides bps long and are characterized by a particular type of internal symmetry.
Statement II - Different restriction enzymes found in different organisms recognise different nucleotide sequences and cut the DNA at different sites.
In the light of above statements, select the correct option given below:
Given below are two statements.
Statement I - The recognition sites of RENs are 4-8 nucleotides bps long and are characterized by a particular type of internal symmetry.
Statement II - Different restriction enzymes found in different organisms recognise different nucleotide sequences and cut the DNA at different sites.
In the light of above statements, select the correct option given below:
Show Hint
Restriction enzymes recognise short palindromic sequences and differ in sequence and cut site.
Updated On: Nov 13, 2026
Both statement I and statement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is incorrect.
Statement I is incorrect but statement II is correct.
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Restriction endonucleases cut DNA at specific recognition sequences.
Step 2: Statement I
Recognition sites are 4 to 8 bp long and show palindromic symmetry. This is correct.
Step 3: Statement II
Different enzymes from different organisms recognise different sequences and cut at different sites. This is correct.
Step 4: Compare the options
Both statements are correct.
Final Answer:
Both statements about restriction enzymes are correct. \[ \boxed{\text{(A) }\text{Both statement I and statement II are correct.}} \]
Restriction endonucleases cut DNA at specific recognition sequences.
Step 2: Statement I
Recognition sites are 4 to 8 bp long and show palindromic symmetry. This is correct.
Step 3: Statement II
Different enzymes from different organisms recognise different sequences and cut at different sites. This is correct.
Step 4: Compare the options
Both statements are correct.
Final Answer:
Both statements about restriction enzymes are correct. \[ \boxed{\text{(A) }\text{Both statement I and statement II are correct.}} \]
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