Circular DNA molecules found in nature are

A) positively supercoiled.
B) negatively supercoiled.
C) not supercoiled, due to their small size.
D) always oriented in a triple helix to conserve space.
E) always in the Z-DNA formation.


Answer: B

Biology & Microbiology

You might also like to view...

Which are not correctly paired?

a. Gastropodia - snails b. Cephalapodia - squid c. Bivalvia - mussels d. Gastropoda - clams e. Bivalvia - scallops

Biology & Microbiology

Which of the following is NOT common to all vertebrates?

a. a cerebellum b. a convoluted cerebrum c. a hindbrain d. a dorsal hollow spinal cord e. a midbrain

Biology & Microbiology

The blood circulatory system transports __________

percent of the absorbed ethanol to the liver. a. 10 b. 25 c. 50 d. 75 e. almost 100

Biology & Microbiology

The work of (Needham/Redi/Spallanzani) using infusions in sealed vials provided strong evidence that spontaneous generation does not occur

What will be an ideal response?

Biology & Microbiology