Question

Eco R1 cuts the DNA between bases G and A only when the sequence of GAATTC is present. The number of nucleotides present in the resultant sticky ends that will be formed in each of the two strands of DNA after this enzyme cuts the DNA will be ______.

Options

• Vector DNA	Foreign DNA
  1 & 5	5 & 1

• Vector DNA	Foreign DNA
  2 & 4	4 & 2

• Vector DNA	Foreign DNA
  2 & 5	5 &

• Vector DNA	Foreign DNA
  3 & 4	4 & 3

Answer 1

Eco R1 cuts the DNA between bases G and A only when the sequence of GAATTC is present. The number of nucleotides present in the resultant sticky ends that will be formed in each of the two strands of DNA after this enzyme cuts the DNA will be 1 & 5; 5 & 1.