rs3749977, also known as Arg226Gln, is a SNP in the olfactory receptor OR2J3 gene. The rarer allele is apparently always found with the rarer allele of rs28757581, according to [R].

A study of 52 unrelated volunteers who were not anosmic tested their ability to detect cis-3-hexen-1-ol (C3HEX), a compound given off by "wounded" plants, most typically, cut grass. The rarer alleles of rs3749977 and rs28757581 were associated with a lowered ability to detect this smell.[R]

 

rs3749977

Parent Gene: OR2J3

Importance: 1
Less common allele: A = 37%
More common allele: G = 63%
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