Question 1
I thought it might be fun to post some multiple choice questions from old exams to see if Sandwalk readers are as smart as my old third year molecular biology students. Here's a question from 1998.
The sequence of the coding region of an E. coli ribosomal protein mRNA consists of 21% G's and 23% C's. What do you predict would be the composition of the part of the gene (double-stranded DNA) from which this mRNA coding region is derived?
a) 56% T's
b) 44% T's
c) 28% T's
d) 23% T's
e) impossible to answer correctly
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