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]
Transcription factor, molecule that controls the activity of a gene by determining whether the geneâs DNA (deoxyribonucleic acid) is transcribed into RNA (ribonucleic acid). The enzyme RNA polymerase catalyzes the chemical reactions that synthesize RNA, using the geneâs DNA as a template. Transcription factors control when, where, and how efficiently RNA polymerases function.