https://darwins-god.blogspot.com/2010/06/orfans-and-theory-that-never-predicted.html
Darwin's God: ORFans and the Theory That (Never) Predicted Them
Because similar species are thought to share a relatively recent common ancestor, they are assumed to have not had much time to evolve diffe...
and thedarwingodorfans
https://researchconnect.buffalo.edu/en/publications/on-the-origin-of-microbial-orfans-quantifying-the-strength-of-the/
On the origin of microbial ORFans: Quantifying the strength of the evidence for viral lateral...
on the
https://researchconnect.buffalo.edu/en/publications/structural-biology-sheds-light-on-the-puzzle-of-genomic-orfans/
Structural biology sheds light on the puzzle of genomic ORFans - SUNY University at Buffalo