KROK 1 Stomatology 2016 – Question 135 · KROK (Dentistry)
Under the influence of physical factors there can develop defects in a DNA molecule. Ultraviolet irradiation, for instance, can cause development of dimers. Dimers are two adjacent pyrimidine bases joined together. Name these bases:
- A. Guanine and cytosine
- B. Thymine and cytosine
- C. Adenine and guanine
- D. Guanine and thymine
- E. Adenine and thymine
Hint
Separate the bases into purines and pyrimidines, and pick the pair in which both bases have a single ring.
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