Exercise 2: The Globin Gene
Procedure
1. Complete the DNA molecule by writing a complementary strand.
Coding Strand: CGT CTC TTC GGA CAC Complementary Strand:
2. Write the mRNA sequence that will be created in the process of transcription. The DNA coding strand has the information for the gene, so the strand must be transcribed. The relationships are slightly different for RNA, because RNA does not have T; therefore, U should be substituted for T. To transcribe DNA to RNA, the pairing relationship is A – U, T – A, C – G, and G – C, respectively.
Coding Strand: CGT CTC TTC GGA CAC
mRNA Strand:
3. Translate the mRNA into amino acids. Use Table 1 as a reference. Remember, when a “stop”
codon is recognized, the protein creation is terminated.
mRNA Strand:
Amino Acids Formed: