List of chromosomal locations associated with sexual orientation
Chromosome Location Associated genes Sex Study1 Origin Note
X chromosome Xq28
Speculative
male only Hamer et al. 1993

Sanders et al. 2015

genetic
Chromosome 1 1p36 both sexes Ellis et al. 2008 potential genetic linkage2
Chromosome 4 4p14 female only Ganna et al. 2019
Chromosome 7 7q31 both sexes Ganna et al. 2019
Chromosome 8 8p12 NKAIN3 male only Mustanski et al. 2005

Sanders et al. 2015

Sanders et al. 2017

Chromosome 9 9q34 ABO both sexes Ellis et al. 2008 potential genetic linkage2
Chromosome 11 11q12 OR51A7 (speculative) male only Ganna et al. 2019 Olfactory system in mating preferences
Chromosome 12 12q21 both sexes Ganna et al. 2019
Chromosome 13 13q31 SLITRK6 male only Sanders et al. 2017 Diencephalon-associated gene
Chromosome 14 14q31 TSHR male only Sanders et al. 2017
Chromosome 15 15q21 TCF12 male only Ganna et al. 2019
1Reported primary studies are not conclusive evidence of any relationship.
2Not believed to be causal.