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Body Size

HMGA2

chr10:8,703,475-8,845,997 · UU_Cfam_GSD_1.0

small breeds enriched at chr10:8-12Mb

Atlas-wide
Frequency
56%
dog-weighted average
Breeds with data
208
of 215
Dogs contributing
13,523
CanVAS Atlas
What the frequency means

HMGA2 chr10:8.7Mb. Major dog body-size locus, recurring in our selection scans as the strongest single chr10 peak. Direction: SMALL vs GIANT.

High frequency means

allele common in small breeds

Low frequency means

allele common in giant breeds

Top 10 breeds, highest frequency
  1. Basset Hound hound
    100% n=34
  2. Bloodhound hound
    100% n=18
  3. Brittany sporting
    100% n=29
  4. Chesapeake Bay Retriever sporting
    100% n=13
  5. English Cocker Spaniel sporting
    100% n=39
  6. Greenland Sledge Dog other
    100% n=12
  7. Irish Terrier terrier
    100% n=8
  8. Petit Basset Griffon Vendeen other
    100% n=12
  9. Rhodesian Ridgeback working
    100% n=19
  10. Saint Bernard working
    100% n=37
Bottom 10 breeds, lowest frequency
  1. Yorkshire Terrier toy
    0% n=228
  2. Wire Fox Terrier terrier
    0% n=10
  3. Village Dog Nz Mid ancient_landrace
    0% n=10
  4. Toy Fox Terrier toy
    0% n=8
  5. Tibetan Spaniel sporting
    0% n=42
  6. Silky Terrier toy
    0% n=9
  7. Shetland Sheepdog herding
    0% n=37
  8. Scottish Deerhound hound
    0% n=11
  9. Schipperke non_sporting
    0% n=40
  10. Pug toy
    0% n=31
Methodology

Frequency is measured at the typed-backbone 10:8752420 on chr10, 8.8 Mb (inside the gene body). Alleles C/T. Coordinates from ensembl symbol UU Cfam GSD 1.0. Per-breed frequencies are computed across all CanVAS dogs labelled with that breed (missing genotypes excluded). See methodology for the full pipeline.

Last updated
Sources: CanVAS (Brundage 2026) · OMIA · Dog10K (Meadows 2023)