Transition mutation of GATCCT is: (PGI Dec 2006)
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)
GGTCCT
GTTCCT
GTCCCT
GGUGGT
Immunology