Answer:
TAC GA
Explanation:
Think of it as, TA and GC. No matter what they're both bound together. 'And yeah, the link people suck.
The correct answer is the root Cap
Abstract. Lung cancer from radon or 239 plutonium exposure has been linked to α-particles that damage DNA through large deletions and point mutations.
(On google)
(Also I like the pic :D)