{"fact":"Crows' color differences can be traced to a small genomic region that houses genes involved in pigmentation and visual perception, suggesting a unique connection between their appearance and mate choice!","context":"A prominent genomic region (<2 megabases) harbored 81 of the 82 fixed differences (of 8.4 million single-nucleotide polymorphisms in total) linking genes involved in pigmentation and in visual perception- a genomic signal reflecting color-mediated prezygotic isolation.","source":"J. W. Poelstra; N. Vijay; C. M. Bossu; H. Lantz; B. Ryll; I. Müller; V. Baglione; P. Unneberg; M. Wikelski; M. G. Grabherr; J. B. W. Wolf, The genomic landscape underlying phenotypic integrity in the face of gene flow in crows, 10.1126/science.1253226","index":651}