https://en.wikipedia.org/wiki/Elizabeth_I_of_England#/media/File:Darnley_stage_3.jpg Day 210 has 54 protein-coding genes (browser view) including TDRD7 (Tudor domain-containing protein 7).
The Tudor domain is named for a gene first discovered in fly when searching for genes that were required to produce female offspring with viable eggs (grandchildren).
Click here to see all 8649670 letters of Day 210 with TDRD7 underlined.