A CDKN2-like polymorphism in Xiphophorus LG V is associated with UV-B-swordtail hybrids.

Nairn, R. S., Kazianis, S., McEntire, B. B., Della Coletta, L., Walter, R. B., Morizot, D. C., (1996). Proceedings of the National Academy of Sciences of the United States of America 93(23), 13042-13047. English language