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'''Heterogamy''' is a term applied to a variety of distinct phenomena in different scientific domains. Usually having to do with some kind of difference, "hetero", in reproduction, "gamy". See below for more specific senses.<br />
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==Science==<br />
===Reproductive biology===<br />
In reproductive biology, heterogamy is the alternation of differently organized generations, applied to the alternation between [[parthenogenesis|parthenogenetic]] and a [[sexual reproduction|sexual]] generation.<ref>{{Cite book| publisher = Walter de Gruyter| isbn = 978-3-11-010661-9| last = Scott| first = Thomas| title = Concise encyclopedia biology| year = 1996| url-access = registration| url = https://archive.org/details/conciseencyclope00scot}}</ref><ref>{{Cite journal| issn = 0165-5752 | volume = 52| issue = 3| pages = 219–225 | last = Poinar| first = George O Jr |author2=Trevor A Jackson |author3=Nigel L Bell |author4=Mohd B-asri Wahid| title = Elaeolenchus parthenonema n. g., n. sp. (Nematoda: Sphaerularioidea: Anandranematidae n. fam.) parasitic in the palm-pollinating weevil Elaeidobius kamerunicus Faust, with a phylogenetic synopsis of the Sphaerularioidea Lubbock, 1861| journal = Systematic Parasitology|date=July 2002| pmid=12075153| doi=10.1023/A:1015741820235| s2cid = 6405965}}<!--| accessdate = 2011-12-20--></ref> This type of heterogamy occurs for example in some [[aphid]]s.<br />
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Alternately, ''heterogamy'' or ''heterogamous'' is often used as a synonym of [[heterogametic]], meaning the presence of two unlike chromosomes in a sex.<ref name=Lokki>{{Cite journal| volume = 79| issue = 3| pages = 513–525| last = Lokki| first = Juhani|author2=Esko Suomalainen |author3=Anssi Saura |author4=Pekka Lankinen | title = Genetic Polymorphism and Evolution in Parthenogenetic Animals. Ii. Diploid and Polyploid Solenobia Triquetrella (lepidoptera: Psychidae)| journal = Genetics| access-date = 2011-12-20| date = 1975-03-01| doi = 10.1093/genetics/79.3.513| pmid = 1126629| url =http://www.genetics.org/content/79/3/513.abstract| pmc = 1213290}}</ref><ref>{{Cite journal| doi = 10.1098/rspb.2004.2769 | issn = 0962-8452| volume = 271 | issue = 1549 | pages = 1751–1755 | last = Hiroki| first = Masato|author2=Yohsuke Tagami | author3=Kazuki Miura |author4=Yoshiomi Kato | title = Multiple infection with Wolbachia inducing different reproductive manipulations in the butterfly Eurema hecabe.| journal = Proceedings of the Royal Society B: Biological Sciences| date = 2004-08-22 | pmid=15306297 | pmc=1691781}}.</ref> For example, [[XY male]]s and [[ZW sex-determination system|ZW]] females are called the heterogamous sex.<br />
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===Cell biology===<br />
{{Unreferenced section|date=June 2021}}{{main|Anisogamy}}<br />
In [[cell biology]], heterogamy is a synonym of [[anisogamy]], the condition of having differently sized male and female [[gamete]]s produced by different sexes or mating types in a species.<br />
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===Botany===<br />
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In [[botany]], a plant is heterogamous when it carries at least two different types of flowers in regard to their reproductive structures, for example male and female flowers or bisexual and female flowers. [[Stamen]]s and [[carpel]]s are not regularly present in each flower or floret.<br />
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==Social science==<br />
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In [[sociology]], heterogamy refers to a [[marriage]] between two individuals that differ in a certain criterion, and is contrasted with [[Endogamy|homogamy]] for a marriage or union between partners that match according to that criterion. For example, ethnic heterogamy refers to marriages involving individuals of different ethnic groups. Age heterogamy refers to marriages involving partners of significantly different ages. Heterogamy and homogamy are also used to describe marriage or union between people of unlike and like sex (or gender) respectively.<br />
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==See also==<br />
{{Wiktionary|heterogamy}}<br />
* [[Heterogametic]]<br />
* [[Homogametic]]<br />
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==References==<br />
{{reflist}}<br />
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[[Category:Plant reproduction]]<br />
[[Category:Genetics]]<br />
[[Category:Exogamy]]<br />
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