https://lumen.instructure.com/courses/204120/pages/tasting-smelling-and-touching Day 211 has 50 protein-coding genes (browser view) including 9 olfactory receptor genes.
The genome has over 800 genes for olfactory detectors, which sense smells. It’s not known which receptors correspond to which chemicals.
Click here to see all 8649669 letters of Day 211 with OR2K2 underlined.