///23andMe V4 Chip

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23andMe V4 Chip

Background

The 23andMe V4 chip is 23andMe's fourth microarray chip and is the one now in use. It replaced their V3 chip in November 2013. It is a completely custom Illumina Genotyping BeadChip.

Microarray chips test a small percentage of SNPs on the human genome. Each letter the DNA code for the human genome (A, C, T, or G) is called a base pair. This one tests about 602,300 SNPs.

SNPs per Million Base Pairs – Heatmap

The V4 chip tests about 602,300 base pairs across the human genome. This heatmap shows how those SNPs are distributed across the 22 autosomal chromosomes and the X-chromosome. The ranges are for counts of tested SNPs in blocks of 1 million base pairs.

23andMe V4 Chip
2017-02-03T12:35:22+00:00September 18th, 2016|Categories: Compendium|Tags: , |
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