system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Transition mutation of GATCCT is: (PGI Dec 2006)
assistant
The correct answer is  Ans: A (GGTCCT) In Transition type of mutation, a purine base is replaced by another purine base (A-G) or a pyrimidine is replaced by another pyrimidine (C-T).So-Transition of -GATCCT is GGTCCT (only single base is changed, according to options given, it the only answer)