Napoleon the First, a Corsican with Pale Skin, Clear Eyes and Red Hair: DNA Evidence for these Phenotypic Traits

Napoleon the First, a Corsican with Pale Skin, Clear Eyes and Red Hair: DNA Evidence for these Phenotypic Traits

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Author(s)

Author(s): Gérard Lucotte, Jacques Macé, Thierry Thomasset

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DOI: 10.18483/ijSci.2476 37 503 1-5 Volume 10 - Jul 2021

Abstract

Objective: We report the results we obtained on DNA concerning the colours of the face, of the eyes and of the hairs of Napoléon the First (1769-1821). Methods: His genomic DNA was previously extracted from one of her authenticated hair lock (dating from 1811). The DNA polymorphisms tested were those of the MATP gene for the skin colour, and of the rs 12913822 in intron 86 of the HERC2 for the eye colour ; for hair colour, the entire DNA sequence of the MC1-R gene was studied, in the search of alleles responsible of the red hair. Results: The genomic DNA is homozygous FF for the F374L polymorphism of the MATPgene ; consequently, Napoléon had a pale face. It is also homozygous CC for the rs12913822 polymorphism ; it results that he had a 99% probability of having clear (blue or green) eyes. The examination of the complete DNA sequence of the MC1-R gene shows the Napoléon genomic DNA is heterozygous CG for the rs1805009 polymorphism , that corresponding to the D294H mutation which is the most frequent of the three common mutations of the gene causing red hairs. Conclusions: According to results obtained on genotypic studies, Napoléon was of the phenotype : pale skin of the face, blue or grey colours of the eyes, and with red hairs. These distinctive features can be observed on a picture of Napoléon dating from 1803, and was also reported by several of the Napoléon’s contemporaries.

Keywords

Napoléon the First, Genomic DNA, Predictions about Colours of the Skin, the Eyes and the Hairs

References

  1. Chanteranne, D. (2019). Napoléon aux 100 visages. Cerf Editor, Paris.
  2. Sulem, P. , Gudbjartsson, D.F., Stacey, S.N., Helgason, A., Rafnar, T., Magnusson, K.P., Manolescu, A., Karason, A., Thorleifsson, G., Jakobsdottir, M., Steinberg, S., Palsson, S., Jonasson, F., Sigurgeirsson, B., Thorisdottir, K., Ragnarsson, R., Benediktsdottir, K.R., Aben, K.K., Kiemeney, L.A., Olafsson, J.H., Gulcher, J., Kong, A., Thorsteinsdottir, U. and Stephansson, K. (2007). Genetic determinants of hair, eye and skin pigmentation in Europeans. Nature Genetics, 39 (12), 1443-1452.
  3. Valenzuela, R.K., Henderson, M.S., Walsh, M.H., Garrisson, N.A., Kelch, J.T., Cohen-Barak, O., Ericson, D.T., Meaney, F.J., Walsh, J.B., Cheng, K.E., Ito, S., Wakamatsu, K., Frudakis, F., Thomas, M. and Brilliant, M.H., (2010). Predicting phenotype from genotype : normal pigmentation. Journal of Forensic Sciences, 55(2), 315-322.
  4. Walsh, S., Liu, F., Wollstein, A., Kovatsi, L., Ralf, A., Kosiniak-Kamycz, A., Branicki, W., and Kayser, M. (2013). The HIrisPlex system for simultaneous prediction of hair and eye colour from DNA. Forensic Science International : Genetics, 7, 98-115.
  5. Graf, J., Hodgson, R. and van Daal, A. (2005). Single nucleotide polymorphisms in the MATP gene are associated with normal human pigmentation variation. Human Mutation, 25, 278-284.
  6. Sturm, R.A., Duffy, D.L., Zhas, Z.Z., Leite, F.P.N., Stark, M.S., Hayward, N.K., Martin, N.G. and Montgomery, G.W. (2008). A single SNP is an evolutionary conserved region within intron 86 of the HERC2 gene determines human blue-brown eye colour. The American Journal of Human Genetics, 82, 424-431.
  7. Valverde, P., Healy, E., Jakson, I., Rees, J.L. and Thody, A.J. (1995). Variants of the melanocyte stimulating hormone receptor gene are associated with red hair and fair skin in humans. Nature Genetics, 11, 328-330.
  8. Lucotte, G. and Bouin-Wilkinson, A. (2014). An autosomal STR profile of Napoléon the First. Open Journal of Genetics, 4, 292-299.
  9. Lucotte, G. and Yuasa, I. (2013). Near fixation of 374 L allele frequencies of the skin pigmentation gene SLC45A2 in Africa. Biochemical Genetics, 51, 655-665.
  10. Rana, B.K., Hewett-Emmet, D., Li, J., Chang, B.H.J., Sambuughin, N., Lin, M., Watkins, S., Bamshad, M., Jorde, L.B., Ramsay, M., Jenkins, T. and Li, W.H. (1999). High polymorphism at the human melanocortin receptor locus. Genetics, 151, 1547-1557.
  11. Jimbow, K., Ishida, O., Hori, Y., Witkop, C.J. and King, R.A. (1983). Combined chemical and electron microscopic studies of pheomelanosomes in human red hairs. Journal of Investigative Dermatology, 81 (6), 506-511.
  12. Lucotte, G. and Thomasset, T. (2017). Study of the red colour of Ste Marie-Madeleine’s hair by scanning electron microscopic characterisation of its melanosomes. Journal of Dermatology and Pigmentation Research, 1(2), 108-116.
  13. Salmon, X. (2014). François Gérard, portraitiste. Réunion des Musées Nationaux-Grand Palais, Paris.
  14. Lord Rosebery (2008). Napoleon, The last phase. Cosimo Editor, New York.
  15. Vial, C.E. (2018). Napoléon à Sainte-Hélène . Perrin Eidtor, Paris.

Cite this Article:

International Journal of Sciences is Open Access Journal.
This article is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License.
Author(s) retain the copyrights of this article, though, publication rights are with Alkhaer Publications.

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