Answer:
In biology it is used as a restriction enzyme. EcoRI creates 4 nucleotide sticky ends with 5' end overhangs of AATT. The nucleic acid recognition sequence where the enzyme cuts is G/AATTC, which has a palindromic, complementary sequence of CTTAA/G.
Step-by-step explanation:
Hopefully that helps, I had previously learned about this stuff too, super tough stuff!