Cited by 753Genetic and phenotypic traits in livestockHuman-Animal Interaction StudiesMorphological variations and asymmetry

The “Domestication Syndrome” in Mammals: A Unified Explanation Based on Neural Crest Cell Behavior and Genetics

Open access
Wilkins, Adam S, Wrangham, Richard W, Fitch, W Tecumseh·2014·Genetics

Abstract

Charles Darwin, while trying to devise a general theory of heredity from the observations of animal and plant breeders, discovered that domesticated mammals possess a distinctive and unusual suite of heritable traits not seen in their wild progenitors. Some of these traits also appear in domesticated birds and fish. The origin of Darwin’s “domestication syndrome” has remained a conundrum for more than 140 years. Most explanations focus on particular traits, while neglecting others, or on the possible selective factors involved in domestication rather than the underlying developmental and genetic causes of these traits. Here, we propose that the domestication syndrome results predominantly from mild neural crest cell deficits during embryonic development. Most of the modified traits, both morphological and physiological, can be readily explained as direct consequences of such deficiencies, while other traits are explicable as indirect consequences. We first show how the hypothesis can account for the multiple, apparently unrelated traits of the syndrome and then explore its genetic dimensions and predictions, reviewing the available genetic evidence. The article concludes with a brief discussion of some genetic and developmental questions raised by the idea, along with specific predictions and experimental tests.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1534/genetics.114.165423

Cites

114 of 114 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The genetic architecture of domestication is by necessity pleiotropic, with variants in genes affecting neural crest development and distribution causing multiple domestication traits.

    “This implies that the genetic architecture of domestication is by necessity pleiotropic, with variants in genes affecting neural crest development and distribution causing multiple domestication traits.”

    From The neural crest cell hypothesis: no unified explanation for domestication (2021) · cites this paper as Wilkins et al. (2014)

    The ‘Conclusions regarding morphological changes’ section says most neural-crest genes are pleiotropic and that multiple neural-crest-affecting mutations can jointly produce domestication-syndrome traits. But the paper presents this as a hypothesis and says in its Conclusions that the precise genetic basis still needs elucidation; it does not establish that domestication’s genetic architecture is necessarily pleiotropic. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The neural crest cell hypothesis entails that a reduction in neural crest cell proliferation and migration is a core genetic mechanism of early domestication.

    “The hypothesis entails that a reduction in neural crest cell proliferation and migration is a core genetic mechanism of early domestication.”

    From The neural crest cell hypothesis: no unified explanation for domestication (2021) · cites this paper as Wilkins et al. (2014)

    In “The Hypothesis: A Critical Role for the Neural Crest,” the paper proposes genetically driven neural crest cell deficits following initial selection for tameness. It lists reduced cell formation, impaired migration, and decreased proliferation at destination sites as possible routes, rather than saying that reductions in both proliferation and migration are required. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • The characters affected by Dlx5/6 in mouse (sociability, vocalization, skull, and brain shape) overlap those affected in the domestication syndrome.

    “The characters affected by Dlx5/6 in the mouse (sociability, vocalization, skull, and brain shape…) overlap those affected in the “domestication syndrome”.”

    From <i>DLX5/6</i> GABAergic Expression Affects Social Vocalization: Implications for Human Evolution (2021) · cites this paper as Wilkins, et al. 2014

    The paper’s sections on morphological and behavioral components of the domestication syndrome describe craniofacial changes, tameness, and changes in brain size. They do not establish that Dlx5/6 affects these traits in mice or identify vocalization as part of the overlap (searched: Dlx5/6, vocalization, sociability). (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Neural crest cell function is polygenic, affected by many genetic variants with individually small effects.

    “The authors also suggest that neural crest cell function is polygenic, affected by many genetic variants with individually small effects.”

    From The neural crest cell hypothesis: no unified explanation for domestication (2021) · cites this paper as Wilkins et al. (2014)

  • The neural-crest cell hypothesis of domestication assumes that a process of domestication leads to depigmentation rather than an intensification of pigmentation.

    “the neural-crest cell hypothesis of domestication assumes that a process of domestication leads to depigmentation rather than an intensification of pigmentation [40,41].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 7

  1. Belyaev D. K., 1974 Domestication, plant and animal, pp. 936– 942 in Encyclopaedia Britannica, Ed. 15, edited by Benton H. H. Encyclopedia Britannica–Helen Hemingway Benton Publishing, Chicago.
  2. Belyaev D. K. Trut L. N., 1989 The convergent nature of incipient forms and the concept of destabilizing selection, pp. 155– 169 in Vavilov’s Heritage in Modern Biology, edited by Ovchinnikov Y. A. Rapoport I. A. Nauka, Moscow.
  3. Crockford, S. J., 2000 Dog evolution: a role for thyroid hormone physiology in domestication changes in Dogs Through Time: An Archaeological Perspective. Proceedings of the First ICAZ Symposium on the History of the Domestic Dog, edited by S. J. Crockford. Archaeological Reports International, Oxford.
  4. Kolesnikova, L. A., 1991 Peculiarities of the pineal structure and function in silver foxes: its changes under domestication, pp. 70–96 in Evolutionary-Genetic and Genetic-Physiological Aspects of Animal Domestication. ICG USSR, Novosibirsk (in Russian).
  5. Kruska D., 1988 b Mammalian domestication and its effects on brain structure and behavior, pp. 211– 250 in The Evolutionary Biology of Intelligence, edited by Jerison H. J. Jerison I. Springer-Verlag, Berlin.
  6. Le Douarin N. M. Kalcheim C., 1999 The Neural Crest. Cambridge University Press, Cambridge.
  7. Trut L. N. Dzerzhinsky F. J. Nikolsky V. S., 1991 Intracranial allometry and morphological changes in silver foxes (Vulpes vulpes) under domestication. Genetika 27: 1605– 1611 (in Russian). 1778462

Cited by

Sorted by citations

Authors
Wilkins, A. S., Wrangham, R. W., & Fitch, W. T.
Affiliations
  • Stellenbosch University (ZA)
  • Harvard University (US)
  • University of Vienna (AT)
Corresponding author
Wilkins, Adam S
Venue
Genetics
Published
2014-07-01
Volume
197
Issue
3
Pages
795-808
ISSN
  • 0016-6731 (ISSN-L)
  • 1943-2631
OpenAlex
W2165155571
Cited by
751
References
114
Citations by year
2026: 35 · 2025: 60 · 2024: 87 · 2023: 113 · 2022: 81 · 2021: 76 · 2020: 77 · 2019: 72 · 2018: 45 · 2017: 45 · 2016: 40 · 2015: 14 · 2014: 4
FWCI
22.49
Type
journal article
Language
en
Open access
Locations
  • Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
FP7 Ideas: European Research Council (230604)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Human-Animal Interaction Studies
  • Physical Sciences › Mathematics › Geometry and Topology › Morphological variations and asymmetry
Keywords
domestication syndrome, neural crest cells, embryonic development, developmental genetics, heritable traits
MeSH terms
Animals, Animals, Domestic, Behavior, Animal, Mammals, Models, Genetic, Neural Crest, Syndrome, Epigenesis, Genetic

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review