DNA gyrase is an essential bacterial enzyme that catalyzes the ATP-dependent negative super-coiling of double-stranded closed-circular DNA. Gyrase belongs to a class of enzymes known as topoisomerases that are involved in the control of topological transitions of DNA. Hope this helps! :3
Enzymes separating DNA molecules.
Answer:
A
Explanation:
A)Chromosomes assort independently, and crossing-over occurs.
Your answer is D. Nucleotide