Which of the following statements about DNA structure is true?
a. The nucleic acid strands in a DNA molecule are oriented antiparallel to each other.
b. The arrangement of the sugar-phosphate groups determines the genetic code.
c. Phosphodiester bonds form between the phosphate group of one nucleotide and the 5' carbon of the adjacent nucleotide.
d. DNA is always synthesized in the 3' to 5' direction.
Ans: a. The nucleic acid strands in a DNA molecule are oriented antiparallel to each other.
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