Y chromosome

Human Y chromosome
Human Y chromosome
	Human Y chromosome (after G-banding)
	Y chromosome in human male karyogram
Features
Length (bp)	62,460,029 bp (CHM13)
No. of genes	63 (CCDS)
Type	Allosome
Centromere position	Acrocentric; (10.4 Mbp)
Complete gene lists
CCDS	Gene list
HGNC	Gene list
UniProt	Gene list
NCBI	Gene list
External map viewers
Ensembl	Chromosome Y
Entrez	Chromosome Y
NCBI	Chromosome Y
UCSC	Chromosome Y
Full DNA sequences
RefSeq	NC_000024 (FASTA)
GenBank	CM000686 (FASTA)

The Y chromosome is one of two sex chromosomes in therian mammals and other organisms. Along with the X chromosome, it is part of the XY sex-determination system, in which the Y is the sex-determining because it is the presence or absence of Y chromosome that determines the male or female sex of offspring produced in sexual reproduction. In mammals, the Y chromosome contains the SRY gene, which triggers development of male gonads. The Y chromosome is passed only from male parents to male offspring.

^ Cite error: The named reference CCDS was invoked but never defined (see the help page).
^ Strachan T, Read A (2 April 2010). Human Molecular Genetics. Garland Science. p. 45. ISBN 978-1-136-84407-2.
^ "Ideogram data for Homo sapience (850 bphs, Assembly GRCh38.p3)". Genome Decoration Page. U.S. National Center for Biotechnology Information (NCBI). 2014-06-03. Retrieved 2017-04-26.