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The human X chromosome with Xq28 (green) located at the tip of the long arm of the chromosome. Studies of the X chromosome as well as the entire human genome have linked Xq28 to the heredity of homosexuality in human males. Xq28 is a chromosome band and genetic marker situated at the tip of the X chromosome which has been studied since at least ...
Hamer argues that human sexuality can and should be studied scientifically and discusses his findings about Xq28, a region of the X chromosome.According to Hamer, he shifted his area of research from metallothionein to the genetics of homosexuality after reading the naturalist Charles Darwin's The Descent of Man, and Selection in Relation to Sex (1871) and the evolutionary geneticist Richard ...
Dean Hamer (/ ˈ h eɪ m ər /; born May 29, 1951) is an American geneticist, author, and filmmaker.He is known for his research on the role of genetics in sexual orientation and for a series of popular books and films that have changed scientific and public understandings and perceptions of human sexuality and gender.
In 2024, Archives of Sexual Behavior published a study comparing the fertility of the parents and grandparents of 459 homosexual men and 79 homosexual women to 7,312 heterosexual men and 3,352 heterosexual women in the Czech Republic that found higher fertility for only the paternal grandmothers of homosexual men and with a small effect size ...
Homosexuality is sexual attraction, romantic attraction, or sexual behavior between members of the same sex or gender. [1] [2] [3] As a sexual orientation, homosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" exclusively to people of the same sex or gender. [4]
This is an accepted version of this page This is the latest accepted revision, reviewed on 16 January 2025. Pattern of romantic or sexual attraction "Sexual preference" redirects here. For the book, see Sexual Preference (book). Sexual orientation Sexual orientations Asexual Bisexual Heterosexual Homosexual Related terms Allosexuality Androphilia and gynephilia Bi-curious Gray asexuality ...
The correct usage of the term homosexual is that an animal exhibits homosexual behavior or even same-sex sexual behavior; however, this article conforms to the usage by modern research, [17] applying the term homosexuality to all sexual behavior (copulation, genital stimulation, mating games and sexual display behavior) between animals of the ...
Neil Risch is an American human geneticist and professor at the University of California, San Francisco (UCSF). Risch is the Lamond Family Foundation Distinguished Professor in Human Genetics, Founding Director of the Institute for Human Genetics, and Professor of Epidemiology and Biostatistics at UCSF.