A 2-month-old, breast-fed baby that was normal at birth begins to develop GI problems and cirrhosis of the liver. Molecular analysis indicates a normal amount of galactose-1-phosphate uridyl transferase mRNA, but no observable enzyme activity. Which of the following would be the best possible explanation for this?
A. Gene deletion
B. Nonsense mutation
C. Premature transcription termination sequence in the DNA
D. Promoter mutation
E. RNA splicing mutation
A. Gene deletion
B. Nonsense mutation
C. Premature transcription termination sequence in the DNA
D. Promoter mutation
E. RNA splicing mutation