SAN DIEGO--(BUSINESS WIRE)--June 29, 2006--Illumina, Inc. (NASDAQ:ILMN - News) announced today that it has introduced a new Sentrix® HumanHap Genotyping BeadChip that extends broad genomic coverage to all four populations studied by the International HapMap Project including the Yoruba in Ibadan, Nigeria. The Yoruba (see Note) show greater genetic diversity than European and Asian people who experienced population bottlenecks in relatively recent human history. This diversity demands a significantly higher number of SNPs (single nucleotide polymorphisms) than less-diverse, younger populations to achieve equivalent genomic coverage.