The Equator is the imaginary line around the Earth, halfway between the poles. 27 people found this useful.
Cornell researchers have answered a fundamental question about how two strands of DNA separate to start a process called replication, in which genes copy themselves. The research examined the role of an enzyme called a helicase, which plays a major role in separating DNA strands. Share: FULL STORY.
Two major categories of enzymes are important tools in the isolation of DNA and the preparation of. recombinant DNA: restriction endonucleases and DNA ligases. Restriction endonucleases recognize a. speciï¬c, rather short, nucleotide sequence on a double-stranded DNA molecule, called a restriction site, and.