Individual #1, sequenced by 23andMe and then inputed into Promethease for SNP data has the following SNP output:
1) rs1935949(C;T) 2) rs2802292(G;T) 3) rs13217795(C;T) 4) rs13220810(C;T) 5) rs2764264(C;T) 6) rs9400239(C;T) 7) rs2153960(C;T) 8) rs2802288(A;G)
Thus individual #1 has eight reported SNPs.
Individual 2 also is sequenced by 23andMe and then inputed into Promethease for SNP data has the following SNP output:
1) rs2802292(T;T) 2) rs2764264(T;T)
Therefore individual #1 has eight reported SNPs for the FOXO3A gene and individual #2 has only two reported SNPs.
Since SNPs represent single nucleotide polymorphisms in the sequence, why does individual #2 only have two SNPs recorded rather than all eight?