I think some factors that influence rabbit reproduction is enough food, healthy rabbits, lots and lots of space for them to populate, and very little predators. This should help I'm not exactly sure what you are looking for though sorry. :^)
1. light morph
2. Dark morph
I say that it is nonpolar or hydrophilic. In this case I would suggest that hydrophilic would be the best answer.
Hope this helps.
let me know in the future if its right pls