Question

Which best describes the structure of DNA?

A. Alleles held together by genes

B. A tetrad with two sister chromatids

C. Nucleic acids arranged in a double helix

D. Chromosomes linked in a loop

Answer 1

Answer:

C.  Nucleic Acids arranged in a double helix.

Explanation:

The structure of DNA is best described as a double helix. DNA has a sugar phosphate back and nucleotides connected by covalent bonds. Together, it looks like a twisted ladder which is also known the double helix.