Heterogamy

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.

Science

Reproductive biology

In reproductive biology, heterogamy is the alternation of differently organized generations, applied to the alternation between parthenogenetic and a sexual generation.[1][2] This type of heterogamy occurs for example in some aphids.

Alternately, heterogamy or heterogamous is often used as a synonym of heterogametic, meaning the presence of two unlike chromosomes in a sex.[3][4] For example, XY males and ZW females are called the heterogamous sex.

Cell biology
Main article: Anisogamy

In cell biology, heterogamy is a synonym of anisogamy, the condition of having differently sized male and female gametes produced by different sexes or mating types in a species.

Botany

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. Stamens and carpels are not regularly present in each flower or floret.

Social science

In sociology, heterogamy refers to a marriage between two individuals that differ in a certain criterion, and is contrasted with 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.

See also
Look up heterogamy in Wiktionary, the free dictionary.

References
  1. Scott, Thomas (1996). Concise encyclopedia biology. Walter de Gruyter. ISBN 978-3-11-010661-9.
  2. Poinar, George O, Jr; Trevor A Jackson; Nigel L Bell; Mohd B-asri Wahid (July 2002). "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". Systematic Parasitology. 52 (3): 219–225. doi:10.1023/A:1015741820235. ISSN 0165-5752. PMID 12075153. S2CID 6405965.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. Lokki, Juhani; Esko Suomalainen; Anssi Saura; Pekka Lankinen (1975-03-01). "Genetic Polymorphism and Evolution in Parthenogenetic Animals. Ii. Diploid and Polyploid Solenobia Triquetrella (lepidoptera: Psychidae)". Genetics. 79 (3): 513–525. doi:10.1093/genetics/79.3.513. PMC 1213290. PMID 1126629. Retrieved 2011-12-20.
  4. Hiroki, Masato; Yohsuke Tagami; Kazuki Miura; Yoshiomi Kato (2004-08-22). "Multiple infection with Wolbachia inducing different reproductive manipulations in the butterfly Eurema hecabe". Proceedings of the Royal Society B: Biological Sciences. 271 (1549): 1751–1755. doi:10.1098/rspb.2004.2769. ISSN 0962-8452. PMC 1691781. PMID 15306297..


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