Biology 0610 · IGCSE · Chromosomes, genes and proteins

Chromosomes, genes and proteins — practice question

Which statement correctly describes the structure of DNA?

  • ADNA contains six types of base.
  • BDNA contains three strands coiled to form a helix.
  • CDNA is made of a chain of amino acids.
  • DDNA has two strands with cross-links between pairs of bases.

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