Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Hypothetical SNP chip typing for single-marker method. Straight lines depict a pair of chromosomes. SNP positions are represented by the diamonds. a shows a normal tagged SNP (pointed at by arrow), b and c show the disease scenarios. Ideally, the disease variant of interest (shaded diamond) would be directly typed, as in b; however, as current platforms likely only type a small portion of possible SNPs, it is more likely that the disease causing SNP will not be tagged directly, as in c
