Question

question 6 1 pts the watson and crick base pairing principle states that nitrogenous bases are specifically bound together _______________. purine - purine purine - pyrimidine pyrimidine - pyrimidine any of these

Explanation:

The Watson - Crick base - pairing principle states that adenine (a purine) pairs with thymine (a pyrimidine) and guanine (a purine) pairs with cytosine (a pyrimidine). So, nitrogenous bases are bound as purine - pyrimidine.

Answer:

B. Purine - Pyrimidine