Twin testosterone transfer hypothesis and the second‐to‐fourth digit ratio in females of same‐sex and opposite‐sex twin pairs: An exploratory study

Twin testosterone transfer hypothesis and the second‐to‐fourth digit ratio in females of same‐sex and opposite‐sex twin pairs: An exploratory study

Abstract The twin testosterone transfer (TTT) hypothesis posits that females with male co‐twins (opposite‐sex, OS) might develop male‐typical traits due to higher prenatal testosterone exposure. This study explored whether females of OS have lower 2D:4D digit ratios and higher testosterone levels co...

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Main Authors: Moses Banyeh, Martha Nyewie, Abdul‐Rafik Abdulai, Charles Nkansah, Gabriel Abbam, Thea Kangkpi, Kervin Edinam Zogli, Shafiat Omotoyosi Shittu, David Bure, Romarick Kofi Wemegah, Mikail Ihsan Azindow, Suleman Yakubu, Musah Seidu, Mohammed Madde Baba, Elisha Essoun, Nancy Owireduwaa, Augusta S. Kolekang
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:Physiological Reports
Subjects:
digit ratios
female
Ghana
humans
testosterone
twins
Online Access:https://doi.org/10.14814/phy2.70207
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