Sexual orientation research. Human hands being analysed and photographed,with the length of the fingers marked. This is part of research into the causes of human sexual orientation. This study was carried out by US neuroscientist Marc Breedlove. He found that the digit ratio varied consistently between homosexual and heterosexual women,suggesting that sexual orientation in women is in part determined by exposure to hormones such as testosterone in the womb before birth. Photographed in 2013 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Berrod, Thierry / Mona Lisa Production |
Bildgröße: | 5760 px × 3840 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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