Practice problem
Which of the following statements about the nitrogenous bases is true?
For every adenine in a strand of DNA, there must be a thymine.
For every adenine in a strand of DNA, there must be a cytosine.
The number of AT and GC base pairs is always equal
For every adenine in a strand of DNA, there must be a guanine.
Type a concept, like “slope” or “photosynthesis”.
