Variation in land-snail shell form has been extensively documented, but its causes are poorly understood. For no character are there general rules relating shell form to environmental characteristics, ...

Some homokaryotic isolates of Verticillium albo-atrum (microsclerotial form) vary radically in colony appearance even when temperature, lighting, humidity and medium content are held constant. This ...

Assembling a comprehensive catalog of common human sequence polymorphisms is a key goal of the Human Genome Project. The International SNP Map Working Group has compiled a map of 1.4 million ...

‘As an evolutionary geneticist, I encourage developmental botanists to look into the genetic basis of the cushion form in stemless daisies’ Composites, or plants in the family Compositae, usually look ...