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rs7221412(A;G)

From SNPedia

Intermediate riser. Wakes up at a time between the AA and GG genotypes.
Is agenotype
ofrs7221412
GeneTRNAS6
Chromosome17
Position8,137,696
mentionedby
Magnitude2
Geno Mag Summary
(A;A) 2 Early riser. Wakes up 1 hour earlier than those with GG genotype.
(A;G) 2 Intermediate riser. Wakes up at a time between the AA and GG genotypes.
(G;G) 2 Late riser. Wakes up 1 hour later than those with AA genotype.

Research also suggests, then you are also more likely to die on a morning, shortly before 11am. http://www.theatlantic.com/health/archive/2012/11/you-are-most-likely-to-die-at-11-am/265427/