The lower-case letter Î³ {\displaystyle \gamma } is used as a symbol for: 1  Chromatic number of in graph theory. 2  Gamma radiation in nuclear physics. 3  The photon, the elementary particle of light and other electromagnetic radiation.  Surface energy in materials 1  science. The Lorentz factor in the theory of relativity.
The Social Hierarchy in Herds of Domestic and Wild Horses. Within the band there is a hierarchy with one mare co-leading the band. While the stallionâs role is to protect the harem from predators and other stallions; the dominant mare leads the band to shelter, food and water.
Stallions follow the conformation and phenotype of their breed, but within that standard, the presence of hormones such as testosterone may give stallions a thicker, cresty neck, as well as a somewhat more muscular physique as compared to female horses, known as mares, and castrated males, called geldings.illies usually soon join a different band with a dominant stallion different from the one that sired them. Colts or young stallions without mares of their own usually form small, all-male, bachelor bands in the wild. Living in a group gives these stallions the social and protective benefits of living in a herd.