Tough to tell -- just too small right now. In another couple of weeks I'll be able to venture a guess.
I've read that for papaya to fruit, you need both male and female
trees. That hasn't been my
experience, as both of the trees I planted appear to be self-fruitful, but bear that in mind as you transplant them: the male trees will look different than the female.
Best of luck.
"The rule of no realm is mine. But all worthy things that are in peril as the world now stands, these are my care. And for my part, I shall not wholly fail in my task if anything that passes through this night can still grow fairer or bear fruit and flower again in days to come. For I too am a steward. Did you not know?" Gandolf