{{Rsnum
|rsid=34276300
|Chromosome=Y
|position=19995425
|Orientation=plus
|GMAF=0.1864
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;C)
|geno3=(C;C)
}}[http://www.jogg.info/41/Turner.htm] Since R1b1c is very common, the first interesting discovery involved a SNP in that haplogroup, rs34276300, which was found to be ancestral in one branch of R1b1c and derived in several other branches.

[http://dna-forums.org/index.php?showtopic=2909&pid=42643&st=40 dna-forums.org] discussion

According to [https://www.23andme.com/you/community/thread/1144/ a 23andMe discussion], this is one of the SNPs that were re-analyzed in April 2009. Customers with older data may wish to redownload. SNPs affected:
* [[rs4420638]]
* [[rs34276300]]
* [[rs3091244]]
* [[rs34601266]]
* [[rs2033003]]
* [[rs7900194]]
* [[rs9332239]]
* [[rs28371685]]
* [[rs1229984]]
* [[rs28399504]].

{{ haplogroup snp }}

{{hgsnp
|alternate_names=P312,S116
|tree=ISOGG
|tree_build=5
|clade_haplogroup=R
|ancestral_haplogroup=R1b1b2a1a
|derived_haplogroup=R1b1b2a1a2
|ancestral_allele=C
|derived_allele=A
}}

{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Illumina Human 1M}}