Editing Homosexual behavior in animals (section)

===Neurobiological basis===
In March 2011, research showed that [[serotonin]] is involved in the mechanism of sexual orientation of mice.<ref>{{cite news|url=https://www.bbc.co.uk/news/health-12825688 |title=Sexual preference chemical found in mice |work=BBC News |date=2011-03-23 |access-date=2011-03-24}}</ref><ref>{{cite journal | vauthors = Liu Y, Jiang Y, Si Y, Kim JY, Chen ZF, Rao Y | title = Molecular regulation of sexual preference revealed by genetic studies of 5-HT in the brains of male mice | journal = Nature | volume = 472 | issue = 7341 | pages = 95–9 | date = April 2011 | pmid = 21441904 | pmc = 4094133 | doi = 10.1038/nature09822 | bibcode = 2011Natur.472...95L }}</ref> A study conducted on fruit flies found that inhibiting the dopamine neurotransmitter inhibited lab-induced homosexual behavior.<ref>{{cite journal|last=Zuk|first=Marlene|name-list-style=vanc|title=Same-sex insects: what do bees-or at least flies-have to tell us about homosexuality?|journal=Natural History|date=22 November 2011|volume=119|issue=10|pages=22 |url=https://experts.umn.edu/en/publications/same-sex-insects-what-do-bees-or-at-least-flies-have-to-tell-us-a}}</ref>
<!-- Homosexual behaviour in insects and arachnids have been difficult to interpret. Most species has a very limited registry of social interactions, making homosexuality as a functional adoptions as seen in social vertebrates less likely. In a review of reports of homosexual behaviour 102 arthropod species, as much as 80% of the observations was suggested as being due to mistaken identity. The authors speculate that the fitness costs to males in same-sex copulation would be less than the cost of ignoring a female, and that the energetic cost of a sensory apparatus with better accuracy outweigh the fitness cost of occasional homosexual behaviour.<ref>{{cite journal| vauthors = Scharf I, Martin OY |title=Same-sex sexual behavior in insects and arachnids: prevalence, causes, and consequences|journal=Behavioral Ecology and Sociobiology|date=2 August 2013|volume=67|issue=11|pages=1719–1730|doi=10.1007/s00265-013-1610-x}}</ref> In some species exhibiting [[traumatic insemination]] (e.g. [[Bed bug|bedbugs]]), male homosexual behaviour will usually cause the death of the inseminated male, which may make such act a form of male combat against competitors.<ref>{{cite web| vauthors = Hansen J |title=A sex life with rape and pepper spray|url=http://dca.au.dk/en/tempside/show/artikel/et-sexliv-med-voldtaegt-og-peberspray/|publisher=DCA - DanishCentre For Food And Agriculture|access-date=8 March 2018}}</ref>> -->