California myotis

That's PKR2.

They have sequences with two tandemly duplicated copies, PKR1 and 2, and then they have three duplicates, PKR and PKR1, 2, which is only in Myotis californicus.

So one, two, or three copies of the PKR gene, first of all.

And they wanna look at the evolutionary history of these duplications, and basically they find that PKR2 is the ancestral copy, and, uh, PKR1 originated from a single duplication event at the root of the Myotis genus.