That I don't know. Might find some info online
found this and it says Drakes are more prone
https://www.metzerfarms.com/angel-wing.html
and interesting the person says it's nutritional more so than genetic. I don't know except I fed 20% protein from hatch on and never had it. But another thing is all my birds but 1 were hatched here and raised by mamas so they are out foraging at a very early age. maybe that has something to do with it too. My only duck [Indian Runner] that came from a hatchery and was raised by me didn't get it though. So I just don't know.