You perform Sanger sequencing on a small fragment of the human genome and obtain the following small sequence read: 5' AGGCTTAAGCTTAATCGGGCTAT 3'. In order to determine if this sequence might be within the coding region of a gene, you examine it for open reading frames. How many open reading frames exist that go all the way through this DNA fragment? (Recall that the stop codons are 5' TAA, 5' TAG, and 5' TGA.)
