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In the daisy family, the flower heads are made up of many small flowers called florets, and are either homogamous or heterogamous. Heterogamous heads are made up of two types of florets, ray florets near the edge and disk florets in the center. Homogamous heads are made up of just one type of floret, either all ray florets or all disk florets.
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". Usually having to do with some kind of difference, "hetero", in reproduction, "gamy".
Heterogamy; Isogamy; Self-fertilization; Self-pollination This page was last edited on 21 March 2020, at 13:55 (UTC). Text is available under the Creative Commons ...
Filter theory is a sociological theory concerning dating and mate selection.It proposes that social structure limits the number of eligible candidates for a mate. [1] Most often, this takes place due to homogamy, as people seek to date and marry only those similar to them (characteristics that are often taken into account are age, race, social status and religion). [1]
Homogamy is marriage between individuals who are, in some culturally important way, similar to each other. It is a form of assortative mating. [1] The union may be based on socioeconomic status, class, gender, caste, ethnicity, or religion, [2] or age in the case of the so-called age homogamy.
The XY sex-determination system is a sex-determination system present in many mammals, including humans, some insects (), some snakes, some fish (), and some plants (Ginkgo tree).
Disassortative mating (also known as negative assortative mating or heterogamy) is a mating pattern in which individuals with dissimilar phenotypes mate with one another more frequently than would be expected under random mating.
This is called facultative parthenogenesis (other terms are cyclical parthenogenesis, heterogamy [14] [15] or heterogony [16] [17]). The switch between sexuality and parthenogenesis in such species may be triggered by the season ( aphid , some gall wasps ), or by a lack of males or by conditions that favour rapid population growth ( rotifers ...