X chromosome

Human X chromosome
Human X chromosome
	Human X chromosome (after G-banding)
	X chromosome in human male karyogram
Features
Length (bp)	154,259,566 bp; (CHM13)
No. of genes	804 (CCDS)
Type	Allosome
Centromere position	Submetacentric; (61.0 Mbp)
Complete gene lists
CCDS	Gene list
HGNC	Gene list
UniProt	Gene list
NCBI	Gene list
External map viewers
Ensembl	Chromosome X
Entrez	Chromosome X
NCBI	Chromosome X
UCSC	Chromosome X
Full DNA sequences
RefSeq	NC_000023 (FASTA)
GenBank	CM000685 (FASTA)

The X chromosome is one of the two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY sex-determination system and XO sex-determination system. The X chromosome was named for its unique properties by early researchers, which resulted in the naming of its counterpart Y chromosome, for the next letter in the alphabet, following its subsequent discovery.^[3]

^ Tom Strachan; Andrew Read (2 April 2010). Human Molecular Genetics. Garland Science. p. 45. ISBN 978-1-136-84407-2.
^ Genome Decoration Page, NCBI. Ideogram data for Homo sapience (850 bphs, Assembly GRCh38.p3). Last update 2014-06-03. Retrieved 2017-04-26.
^ Angier, Natalie (2007-05-01). "For Motherly X Chromosome, Gender Is Only the Beginning". The New York Times. Retrieved 2007-05-01.

[StrachanRead2010-1] Tom Strachan; Andrew Read (2 April 2010). Human Molecular Genetics. Garland Science. p. 45. ISBN 978-1-136-84407-2.

[850bphs-2] Genome Decoration Page, NCBI. Ideogram data for Homo sapience (850 bphs, Assembly GRCh38.p3). Last update 2014-06-03. Retrieved 2017-04-26.

[nyt-angier-3] Angier, Natalie (2007-05-01). "For Motherly X Chromosome, Gender Is Only the Beginning". The New York Times. Retrieved 2007-05-01.

[1]

[2]

[3]