Transcribe and translate the following gene on the DNA strand. Be sure to indicate the
base sequence of the mRNA and the tRNA. Assume no mRNA processing. Use the
chart provided to give the amino acid sequence that is encoded in this gene. Finally,
which enzyme is coded?
*USE TOP STRAND!
C C A G C T C A T G G G
DNA
G G T C G A G T A C C C
mRNA _________________________
_____ _____ _____ _____
tRNA
Amino Acids
Lactase = GLY-ARG-HIS-GLY
RNA Polymerase = PRO-ALA-HIS-GLY
Helicase =MET-ARG-TRP-SER
DNA Polymerase = GLY-ARG-VAL-PRO
ATP synthase =GLY-THR-SER-THR
31. If a mutation occurs wherein a ‘C’ is substituted for the third letter of the third codon,
what enzyme would now be coded?
32. If an insertion occurred during transcription above (an A was inserted between the
first and second codons), what enzyme would now be coded?
5’ 3’