Day 354 (22pter-22p12): Chromosome 22, starting with heterochromatin

https://commons.wikimedia.org/wiki/File:Human_chromosome_22_from_Gene_Gateway_-_no_label.png

Day 354 has 0 protein-coding genes (browser view) – the first day of Chromosome 22 is entirely heterochromatin.

Although it is the chromosome with the highest number, it is not actually the smallest – Chromosome 21 is.

Click here to see all 8469744 letters of Day 354.