Land: 3,537,436 sq. miles (9,161,923 sq km) Water: 181,274 sq. miles (469,497 sq km) Total: 3,718,710 sq. miles (9,631,420 sq km) Land Area: (individual states) Land Area: (all countries) Horizontal Width: 2,680 miles. Vertical Length: 1,582 miles.
This intronless gene encodes a transcription factor that is a member of the high mobility group (HMG)-box family of DNA-binding proteins. This protein is the testis-determining factor (TDF), which initiates male sex determination. Mutations in this gene give rise to XY females with gonadal dysgenesis (Swyer syndrome); translocation of part of the Y chromosome containing this gene to the X chromosome causes XX male syndrome. [provided by RefSeq, Jul 2008]
Testis: The male sex gland, located behind the penis in a pouch of skin called the scrotum. The testes produce and store sperm and are also the body's main source of male hormones, such as testosterone.These hormones control the development of the reproductive organs and other male characteristics, such as body and facial hair, low voice, and wide shoulders.he testes produce and store sperm and are also the body's main source of male hormones, such as testosterone. These hormones control the development of the reproductive organs and other male characteristics, such as body and facial hair, low voice, and wide shoulders.