In humans and many other animal species, sex is determined by specific chromosomes. How did researchers discover these so-called sex chromosomes? The path from the initial discovery of sex chromosomes ...

Seven strains of the Central American A1 mating series of Didymium iridis were crossed in all possible combinations. Individual plasmodia were isolated and grown to a stage where total DNA could be ...

A preliminary analysis is presented of the mode of inheritance of patterns of male secondary sex coloration in several wild populations of Lebistes reticulatus in Trinidad. A high proportion of such ...

These activities introduce ideas about heredity, observing the differences and similarities in a population, and modeling how inheritance works. Campers can think about organisms as systems in which ...

Largescale changes in the genome inherited from parents are significant risk factors for pediatric solid tumors, such as Ewing sarcoma, neuroblastoma, and osteosarcoma, according to a new study. The ...