Assertion: The palindromic sequences at which endonucleases act vary from organism to organism.
Reason: The palindromic sequence of EcoRI is GAATTC.
a. Both assertion and reason are true, and reason is the correct explanation of assertion.
b. Both assertion and reason are true, but reason is not the correct explanation of assertion.
c. Assertion is true but reason is false.
d. Both assertion and reason are false
Dear Student,
Ans. Option b) is correct: Both assertion and reason are true, but reason is not the correct explanation of assertion.
The palindromic sequence is a certain sequence of the DNA that reads the same whether read from 5’ → 3’ direction or from 3’→ 5’ direction. They are the site for the action of restriction enzymes. Most restriction enzymes are palindromic sequences.
EcoRI recognises GAATTC restriction site.
Regards
Ans. Option b) is correct: Both assertion and reason are true, but reason is not the correct explanation of assertion.
The palindromic sequence is a certain sequence of the DNA that reads the same whether read from 5’ → 3’ direction or from 3’→ 5’ direction. They are the site for the action of restriction enzymes. Most restriction enzymes are palindromic sequences.
EcoRI recognises GAATTC restriction site.
Regards