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One was an X chromosome linkage analysis of 54 pairs of gay brothers carried out by the independent research group of Sanders et al. in 1998. The results of the study were indistinguishable from the results of the study by Hu et al. : both reported that the chromosomal location of maximum sharing was locus DXS1108 and both reported similar ...
Without the gene, the mice exhibited masculine sexual behavior and attraction toward urine of other female mice. Those mice who retained the gene fucose mutarotase (FucM) were attracted to male mice. [43] In interviews to the press, researchers have pointed that the evidence of genetic influences should not be equated with genetic determinism.
Thus homosexual behavior has been given a number of terms over the years. According to Bagemihl, when describing animals, the term homosexual is preferred over gay, lesbian, and other terms currently in use, as these are seen as even more bound to human homosexuality. [9]: 122–166 Bailey et al. says: [2]
Giraffes in Kenya; giraffes have been called "especially gay" for engaging in male-male sexual behavior more often than male-female (heterosexual) sex. [1] [2]This is a list of animals for which there is documented evidence of homosexual behavior.
The idea of epigenetics and gene expression has been a theory applied to the origins of homosexuality in humans. One team of researchers examined the effects of epi-marks buffering XX fetuses and XY fetuses from certain androgen exposure and used published data on fetal androgen signaling and gene regulation through non-genetic changes in DNA ...
Lesbian, gay, bisexual, transgender, and queer/questioning people (LGBTQ community) people wishing to have children may use assisted reproductive technology.In recent decades, developmental biologists have been researching and developing techniques to facilitate same-sex reproduction.
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It is the most widely used "genetic background" for genetically modified mice for use as models of human disease. They are the most widely used and best-selling mouse strain due to the availability of congenic strains, easy breeding, and robustness. [1] The median lifespan of C57BL/6 mice is 27–29 months and the maximum lifespan is about 36 ...