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Question: Answered & Verified by Expert
Select the incorrect statement.
BiologyHuman Health and DiseasesNEET
Options:
  • A Upto 900 restriction enzymes have been isolated from over 230 strains of bacteria.
  • B In the year 1963, the two enzymes responsible for restricting the growth of bacteriophage in Escherichia coli were isolated.
  • C Polymerase enzyme is one of the key tools for recombinant DNA technology.
  • D EcoRI cut the DNA between bases G and A producing blunt ends, when the sequence GAATTC is present in the DNA.
Solution:
1684 Upvotes Verified Answer
The correct answer is: EcoRI cut the DNA between bases G and A producing blunt ends, when the sequence GAATTC is present in the DNA.
EcoRI identifies specific palindromic DNA sequence GAATTC and cuts are specific locations away from the center between G and A making staggered or sticky end cuts. It breaks phosphodiester bonds and hydrogen bonds.

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