2017/11/01 by Tanya Khovanova, Khovanova, Tanya
Medicine · Social Sciences · #46N30 #97K50 #Demographic Trends and Gender Preferences #FOS: Biological sciences #Family Dynamics and Relationships #Other Quantitative Biology (q-bio.OT) #Populations and Evolution (q-bio.PE) #Reproductive Health and Technologies
paper · pdf · doi:10.48550/arxiv.1711.09692
openalex publication_date 2017/11/01 · openalex created_date 2022/08/17 · openalex updated_date 2026/07/28
Mathematicians have always been attracted to the field of genetics. I am\nespecially interested in the mathematical aspects of research on homosexuality.\nCertain studies show that male homosexuality may have a genetic component that\nis correlated with female fertility. Other studies show the existence of the\nfraternal birth order effect, that is the correlation of homosexuality with the\nnumber of older brothers.\n This paper is devoted to the mathematical aspects of how these two phenomena\nare interconnected. In particular, I show that the fraternal birth order effect\nproduces a correlation between homosexuality and maternal fecundity. Vice\nversa, I show that the correlation between homosexuality and female fecundity\nimplies the increase of the probability of the younger brothers being\nhomosexual.\n