Editing Sex-determination system (section)

== Discovery ==
{{Expand section|date=June 2021}}
Sex determination was discovered in the [[mealworm]] by the American geneticist [[Nettie Stevens]] in 1903.<ref>{{Cite web|url=https://www.nature.com/scitable/topicpage/nettie-stevens-a-discoverer-of-sex-chromosomes-6580266|title=Nettie Stevens: A Discoverer of Sex Chromosomes {{!}} Learn Science at Scitable|website=www.nature.com|access-date=2018-06-07|archive-date=7 April 2019|archive-url=https://web.archive.org/web/20190407152710/https://www.nature.com/scitable/topicpage/nettie-stevens-a-discoverer-of-sex-chromosomes-6580266|url-status=live}}</ref><ref>{{cite journal | vauthors = Ogilvie MB, Choquette CJ | title = Nettie Maria Stevens (1861–1912): her life and contributions to cytogenetics | journal = Proceedings of the American Philosophical Society | volume = 125 | issue = 4 | pages = 292–311 | date = August 1981 | pmid = 11620765 | jstor = 986332 }}</ref><ref>{{Cite web|url=https://embryo.asu.edu/pages/nettie-maria-stevens-1861-1912|title=Nettie Maria Stevens (1861–1912) {{!}} The Embryo Project Encyclopedia|website=embryo.asu.edu|access-date=2018-06-07|archive-date=8 April 2019|archive-url=https://web.archive.org/web/20190408010235/https://embryo.asu.edu/pages/nettie-maria-stevens-1861-1912|url-status=live}}</ref>

In 1694, J.R. Camerarius, conducted early experiments on pollination and reported the existence of male and female characteristics in plants(Maize).

In  1866, [[Gregor Mendel]] published on inheritance of genetic traits. This is known as [[Mendelian inheritance]] and it eventually established the modern understanding of inheritance from two [[gametes]].

In 1902, C.E. McClung identified sex chromosomes in bugs.

In 1917, C.E. Allen, discovered sex determination mechanisms in plants.

In 1922, C.B. Bridges, put forth the Genic Balance Theory of sex determination.

In 1928, Fritz Baltzer first described environmental sex determination.<ref>{{Cite journal |last=Baltzer |first=Fritz |date=1928 |title=Über metagame Geschlechtsbestimmung und ihre Beziehung zu einigen Problemen der Entwicklungsmechanik und Vererbung (Auf Grund von Versuchen an Bonellia) |journal=Verhandlungen der Deutschen Zoologischen Gesellschaft 32: 273-325 |language=de |volume=32 |pages=273-325}}</ref>