Biologists have revealed genetics behind the alternating sexes of walnut trees. The research reveals a mechanism that has been stable in walnuts and their ancestors going back 40 million years -- and ...

Heterostyly, a floral polymorphism where a species produces two or three distinct flower types with reciprocal arrangements ...

A new international study led by Mayo Clinic researchers has identified a genetic factor that may explain why some patients ...

Trans-species polymorphism at primate Major Histocompatibility Complex genes is old, especially in the 'classical' genes, while rapidly-evolving regions of each gene correspond with proteins' ...

"Our findings suggest that this color polymorphism is more than just camouflage—it actively ... and discovered that the genetic variants responsible for the green and brown morphs have been maintained ...

UC Davis graduate student Jeffrey Groh has discovered how walnut trees are able to produce flowers of different sexes at different times in the same season. The genetic mechanism is similar to sex ...

The genetics behind the alternating sexes of walnut trees has been revealed by biologists at the University of California, Davis. The research, published Jan. 3 in Science, reveals a mechanism that ...