DNA to RNA to PROTEIN

Dry Lab

Directions: 1. Use a sharpened pencil.

2. Complete the following exercise neatly in the spaces provided.

3. Write out each answer entirely.

The following is the base sequence on the “sense” strand of a DNA molecule:

A C T A C A A T G C C A G T G G T T C G C A C

Give the base sequence of the complementary DNA strand.

Give the base sequence of the strand of mRNA read from the original DNA strand.

What polypeptide fragment would this mRNA code for? (i.e. the amino acid sequence)

If the ninth nucleotide in the original DNA strand were changed from G to C, what would be the resulting mRNA sequence?

What polypeptide fragment would the new mRNA code for?

If a G were added to the original DNA strand after the 8th nucleotide, what would be the resulting mRNA sequence?

What polypeptide fragment would the new mRNA code for?

If the 13th nucleotide in the original DNA strand were changed from G to C, what would be the resulting mRNA sequence?

What polypeptide fragment would the new mRNA code for?