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To verify that you understand the relationship between DNA, RNA and proteins, you will complete the following exercises:
- Print out Activity 3 Worksheet in Show Your Stuff. Write out the complementary mRNA nucleotide sequences that correspond to the first 45 bases of each DNA strand in the space provided on the worksheet. Separate nucleotides into discrete codons.
- Use the codon/amino acid chart in Access Excellence to determine the sequence of the first 15 amino acids in each protein molecule coded for by the mRNA.
- In general terms, explain how the proteins that result from the translation of the two genes will differ from one another-address size, number and sequence of amino acids, and why they would have different chemical properties. Check out the shapes of some different proteins (this page has several different proteins--select GIF to see diagrams of them).
