As part of the NapolÃ©on I Genome (NIG) project we have reconstructed, based on more than one hundred Y-STRs (Y-short tandem repeats), the complete Y-haplotype of the non-recombinant part of the Y-chromosome (NRY) of French Emperor NapolÃ©on I (1769-1821). We already knew the allelic values at Y-markers of the Y-chromosome of NapolÃ©on I, but only for the palindromic STR YCAIIa and b and for the non-palindromic Y-STR DYS19. The present reconstruction aims to compare the allelic values at Y-STRs of the DNA of Charles NapolÃ©on (C.N.), the living 4th generation descendant of JÃ©rÃ´me Bonaparte (NapolÃ©on Iâ€™s youngest brother), with those of Alexandre Colonna Walewski (A.C.W.), the living 4th generation descendant of Count Alexandre Walewski (the son born of the union between NapolÃ©on I and Countess Maria Walewska). We have previously established that NapolÃ©on I, C.N. and A.C.W. are of the same Y-haplogroup E1b1b1b2a1. The allelic values for C.N. and A.C.W. are the same for ninety-three other non-palindromic markers (belonging to ninety different STRs) and for thirty-eight other palindromic markers (belonging to fifteen different STRs); these values then constitute those deduced in the reconstruction of the allelic values of the STR markers of the NapolÃ©on Iâ€™s Y-haplotype. Four non-palindromic STRs and two palindromic STRs have different allelic values in C.N. and A.C.W.; we have deduced the allelic value of NapolÃ©on I for one (DYS454), and the probable allelic values for two (Y-GATA-C4 and DYS712) of these non-palindromic variable STRs. To sum up, we have established, by reconstruction of the lineage, the allelic values of the markers of NapolÃ©on Iâ€™s Y-haplotype for a total of one-hundred and thirty-three different Y-STR markers.
Y-chromosome haplotype, NapolÃ©on the First, short tandem repeats
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