Day 306 has 5 protein-coding genes (browser view).
This is one of the regions that was sequenced before the completion of the human genome project, in 1999. Interestingly, this paper thought that the 84 genes (found both today and yesterday on Day 305 (16p12.1-16p11.2): BOLA2, a gene duplication specific to humans) was a surprisingly low number – at the time most scientists believed that there would be 100,000 genes rather than 20,000 – and in fact this region is average in gene density.
Click here to see all 8212577 letters of Day 306.