A SNP (pronounced "snip") is a substitution of one base pair at a given location on the genome. At position 11,294,479 on human chromosome 7, for instance, some people have an A, while others have a G ...

Only a subset of single-nucleotide polymorphisms (SNPs) can be genotyped in genome-wide association studies. Imputation methods can infer the alleles of 'hidden' variants and use those inferences ...

We then cover the key online resources providing access to the rat genome, including the new SNP views at Ensembl, the RefSeq and Genes databases at the US National Center for Biotechnology ...

And that variation reflects evolutionary processes that molded the modern genome. Lander was one of several speakers on these aspects of SNPs at the Fourth International Meeting on Single Nucleotide ...