DNA molecules
A) were discovered in the decade after Darwin's death.
B) make up genes and chromosomes, which are basic hereditary units.
C) initiate and guide the construction of complex sugars.
D) are made up of three bases: adenine, cytosine, and factor.
E) are the messenger molecules of RNA.

Question

Quizplus · Accepted Answer

DNA molecules make up genes and chromosomes, which are the basic hereditary units.

Answer: D 
 DNA molecules consist of nucleotides that contain four nitrogenous bases: adenine, cytosine, guanine, and thymine. RNA, on the other hand, only contains adenine, cytosine, guanine, and uracil.

DNA Molecules