Potential for homosexual response is prevalent and genetic.
We investigated the potential to engage in homosexual behavior in 6001 female and 3152 male twins and their siblings finding that 32.8% of the men and 65.4% of the women reported such potential (p<0.001). 91.5% of these men and 98.3% of these women reported no overt homosexual behavior during the preceding 12 months. The potential to engage in homosexual behavior was influenced by genetic effects for both men (37.4%) and women (46.4%) and these overlapped only partly with those for overt homosexual behavior.
Santtila
Pekka
P
Center of Excellence in Behavior Genetics, Department of Psychology, Abo Akademi University, 20500 Turku, Finland. pekka.santtila@abo.fi
Sandnabba
N Kenneth
NK
Harlaar
Nicole
N
Varjonen
Markus
M
Alanko
Katarina
K
von der Pahlen
Bettina
B
D000293:Adolescent; D000328:Adult; D000374:Aggression / Q000502:physiology; D005260:Female; D005823:Genetics; D006716:Homosexuality / Q000502:physiology* / Q000523:psychology* / Q000706:statistics & numerical data; D006801:Humans; D016013:Likelihood Functions; D008297:Male; D010641:Phenotype; D012647:Self-Assessment; D012725:Sexual Behavior / Q000523:psychology; D012931:Social Environment