Gene
OCA2
OCA2 helps control melanin production in pigment cells. rs12913832 lies in neighboring HERC2 but changes OCA2 regulation and is strongly linked to lighter or darker iris pigmentation. Other pigmentation genes can change the visible color.
Traits OCA2 shapes
Reference databases
How Biome reads this
Biome's whole-genome test reads this from one saliva sample, alongside all 3.2 billion letters of your DNA.
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