Which of the following best describes the structure of DNA?
A.
a polymer formed from linked subunits of four kinds of nitrogenous bases
B.
an amino acid chain formed from a sequence of three nucleotides
C.
a molecule formed from twenty-three pairs of chromosomes
D.
a protein formed from a chain of twenty possible amino acids
1 answer
A. a polymer formed from linked subunits of four kinds of nitrogenous bases