5 A 6000 bp region of prokaryotic DNA has 500 complete rotat

5. A 6000 bp region of prokaryotic DNA has 500 complete rotations (or twists). This region of the DNA molecule is ________ .

a. relaxed DNA

b. positively supercoiled DNA

c. negatively supercoiled DNA

Solution

Negatively supercoiled DNA.
50 rotations that means 500/10
Hardly 20 rotations that explans its beneath -rotated. So it is negatively supercoiled DNA.