NCIt definition : A way of denoting the collective genotype of a number of closely linked loci on a
chromosome.;
Alternative definition : NCI-GLOSS: A set of closely linked genetic markers present on one chromosome which
tend to be inherited together.; CDISC: The combination of linked marker alleles for a given region of DNA on a single
chromosome. (Glossary of Genomics Terms. JAMA. 2013 Apr 10; 309(14):1533-35.);