We’re posting a series of blog posts explaining genetics for the layperson in the context of their health.

This is part one of the series, and introduces the fundamental genetics concepts of genotype, phenotype, polymorphism and a vignette of how genomic data can be applied in a clinical setting. We’ll use some of the excellent marketing material from the personal genotyping company 23andMe.

Genes: background.

SNPs: some of what we find through our data analysis are SNPs. A SNP is a specific type of polymorphism, or sequence variant. We’re looking for SNPs with some effect (a functional consequence).

Heredity: background.

Genotypes, phenotypes and medicine.