Question

Which of the following is NOT true about pyrimidines and purines?

Select one or more:

O a. Purines have a two ring nitrogenous base

b. Purines and pyrimidines bind together using hydrogen bonds

O c. Pyrimidines have a two-ring nitrogenous base

d. Purines always bind to pyrimidines when a DNA helix is formed

e. Purines and pyrimidines make up the "rungs" of the DNA ladder​

Answer 1

Answer:

E. Purines and pyrimidines make up the "rungs" of the DNA ladder