Reposted by Kora Klein
Polymorphisms are fun to study, here is a butterfly one. Negative freq.dependence works to maintain things but where does it come from? Temporal variation works but not always! @koraklein.bsky.social and @chriswheat.bsky.social looked into this in detail.
royalsocietypublishing.org/rstb/article...
royalsocietypublishing.org
Emergence time difference can create negative frequency dependence and maintain a colour polymorphism in Colias butterflies
Abstract. Many species of Colias butterflies show a female-limited colour polymorphism where the dominant Alba allele leads to white wings, faster developm