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Y-chromosome DNA

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This page is a gateway to finding more information and resources on Y-chromosome DNA. Some portal pages may contain "Recommended Reading" and/or "Getting Started" sections which contain useful links.

Introduction to Y-chromosome DNA


Human Y-chromosome DNA

The human Y chromosome is a male-specific sex chromosome. Nearly all humans who possess a Y chromosome will be morphologically male. Although the Y chromosome is situated in the cell nucleus, it only recombines with the X-chromosome at the ends of the Y chromosome; the vast majority of the Y chromosome (95%) does not recombine. When mutations (errors in the copying process) arise in the Y chromosome in the form of single-nucleotide polymorphisms) or short tandem repeats, they are passed down directly from father to son in a direct male line of descent. This line is known as the patriline.

The Genome Reference Consortium maintains the reference assembly of the human genome. The GRC tracks issues relating to the Y chromosome such as gaps and errors in the sequence. Details can be found here. The GRCh37 build of the Y chromosome has a length of 59,373,566 base-pairs, but only 25,653,566 base-pairs are actually positioned. Build 38 (GRCh38) was released on 24 December 2013.[1]

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Y-chromosome DNA Technical Terms

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Portal Contents
Human Y-chromosome DNA

The following is a list of all Y-DNA-related content in the ISOGG Wiki:

General

Surname DNA projects

How to join an FTDNA project
Surname DNA projects
Surname mapping
One-name study
Guild of One-Name Studies
Y-DNA project help

Y-DNA haplogroups

Technical terms

Y-DNA haplogroups


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