Multiple choice Which base is responsible for hot spots in spontaneous point mutation? Adenine Guanine 5-bromouracil 5-methylcytocine Reveal answer Fill a bubble to check yourself C Correct answer Explanation 5-Bromouracil (or 5-bromo-2,4(1H,3H)-pyrimidinedione or 5-BrU or 5-BU) is a brominated derivative of uracil that acts as an antimetabolite or base analog, substituting for thymine in DNA, and can induce DNA mutation