Abbreviations

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This is a list of abbreviations used in genetic genealogy. Abbreviations can be used as shortcuts for navigation on the ISOGG Wiki. If you type in any of the abbreviations on this list for which there is a Wiki article you will automatically be redirected to the relevant Wiki page.

Contents
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

  • AAGRA - Australasian Association of Genealogists and Record Agents
  • aDNA - Ancient DNA
  • AGRA - Association of Genealogists and Researchers in Archives (UK)
  • AtDNA - Autosomal DNA
  • AIMs - Ancestry-Informative Markers
  • AJ - Ashkenazi Jew
  • AMH - Atlantic Modal Haplotype (see Western Atlantic Modal Haplotype) or anatomically modern human
  • APG - Association of Professional Genealogists (US and worldwide)
  • ARG - Ancestral recombination graph
  • ASHG - American Society of Human Genetics

B

C

  • CA - Common ancestor
  • cMcentiMorgan
  • CNV - Copy Number Variant
  • CODIS - Acronym for Combined DNA Index System
  • CRS - Acronym for Cambridge Reference Sequence. The first mitochondrial genome to be fully sequenced at Cambridge University in 1981. The anonymous donor of the CRS was haplogroup H. Until 2012 mitochondrial DNA results were determined based upon where the results differ from a revised version of the CRS known as rCRS.
  • CSV - Comma-separated values

D

E

F

  • FAQs – Frequently Asked Questions
  • FFHSFederation of Family History Societies
  • FGS – Federation of Genealogical Societies
  • FGS – Full Genomic Sequence. The name previously used by FTDNA for the FMS.
  • FIR – Fully identical region
  • FMS – Full Mitochondrial Sequence. A DNA test which sequences the entire mitochondrial genome
  • FST - Fixation index - A measure of genetic distances between populations. The closer to zero the less the distance.
  • FTDNAFamily Tree DNA
  • FTDNATiP – Acronym for Family Tree DNA Time Predictor. A proprietary program created to calculate the time to the most recent common ancestor using mutation rates specific to each Y-STR marker.

G

  • GAP – Group Administrator Page. This is the name given by Family Tree DNA to the special pages used by group administrators to administer their DNA projects.
  • GEDCOM - GEnealogical Data COMmunication. A method of exchanging genealogical information in a standard file format
  • GB - Great Britain (comprising the countries of England, Scotland and Wales)
  • Gb - Gigabase
  • Gbp - Gigabase pair
  • GOONS - Guild of One-Name Studies
  • GRO - General Record Office (England and Wales)
  • GROS - General Record Office Scotland

H

  • HBD - Human biodiversity or homozygosity by descent
  • HGP - Human Genome Project
  • HIR - Half-identical region
  • HTS - High throughput sequencing
  • HUGO – Human Genome Organisation
  • HVR – Hyper-variable region. The sections of non-coding mitochondrial DNA that are used for low-resolution genealogical DNA testing.

I

J

K

  • Kb - Kilobase
  • Kbp - Kilobase pair
  • KYA - Thousand years ago

L

  • LCN - Low Copy Number
  • LD - Linkage disequilibrium
  • LDS - Latter-day Saints (The Church of Jesus Christ of the Latter-day Saints)
  • LGM - Last Glacial Maximum
  • LHON - Leber's hereditary optic atrophy (a mitochondrial DNA disease)
  • LoH - Loss of heterozygosity
  • LTR - Long terminal repeat

M

  • MALD - Mapping by linkage disequilibrium
  • Mb - Megabase
  • Mbp - Megabase pair
  • MDKO - Most distant known ancestor
  • MNP - Multiple nucleotide polymorphism
  • MPS - Massively parallel sequencing
  • mtDNA - Mitochondrial DNA
  • mRNA - Messenger RNA
  • MRCA - Most recent common ancestor
  • MSA - Multiple sequence alignment
  • mu - Map unit

N

O

P

R

  • rCRS - Revised Cambridge Reference Sequence (see CRS above)
  • RecLOH - Acronym for Recombinant Loss of Heterozygosity
  • ROH - Runs of homozygosity. ROH are regions of the genome where an individual inherits the same alleles from both parents. The alleles are identical because our parents have inherited them from a common ancestor at some point in the past or more recently through a cousin marriage.
  • RSRS - Reconstructed Sapiens Reference Sequence, the deduced ancestral mitochondrial sequence.

S

T

U

V

  • VCF - Variant call file

W

Y

See also