1. Click on If you prefer a split screen, click here

2. Under "Characteristics of DNA Sequences III", click on "representatives of each sequence type."

3. Highlight the first DNA sequence under First Exon, do CTRL- C (copy).

4. Go to DNA Sequences II, and click on vector.cshl.org/bioinformatics/links.htm under #2.

5. Click on BCM Sequence Utilities (Baylor College of Medicine)

6. Click in the box- Do CTRL-V (paste)- make sure that "ReadSeq" is marked. Click "submit"

7. Select the resulting sequence- but NOT the very first line. Do CTRL- C.

8. Go back to DNA Seq. III and do CTRL- V in the box (click first). Click on "all."

9. Fill in the results on the worksheet for f(A + T), f(G + C), and f(CpG)

10. Repeat this several times, using sequences for exons, introns, and intergenic regions

11. Analyze the results.