The mice are Agouti Viable Yellow, naturally occurring mutants, which, though genetically identical, have coats that vary in color—a phenomenon that researchers have long studied as an example of ...

represented by agouti hair). Despite this low contribution, the mouse has a strong anogenital pigment spot, the occurrence of which is controlled by testosterone in several rodent species 3.

For instance, in normal, healthy mice, the agouti genes are kept in the "off" position by the epigenome, which attaches methyl groups to the corresponding regions of DNA, resulting in the DNA's ...

Golf Notes is coming to you from the Jacaranda Hotel, Puerto Viejo, Costa Rica. It is 7:30 Monday morning and very pleasantly warm. I arrived here at 7:00 pm Sunday evening after ...