DNA Structure

123456
Across
  1. 4. Bond between nitrogenous bases
  2. 5. sugar in DNA
  3. 6. Adenine always bonds with
Down
  1. 1. repeating unit of a DNA
  2. 2. DNA is double stranded and twisted to form the ___________ structure
  3. 3. number of bonds between cytosine and Guanine