self-fertilization
Americannoun
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Botany. fertilization of an ovum of a plant by a male gamete from the same flower (cross-fertilization ).
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Zoology. fertilization of the ovum of a hermaphroditic animal by a sperm from the same individual, as in some species of tapeworm.
noun
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012-
Fertilization that occurs when male and female gametes produced by the same organism unite. Self-fertilization occurs in many protozoans and invertebrate animals. It results from self-pollination in plants. Self-fertilization allows an isolated individual organism to reproduce but restricts the genetic diversity of a community.
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Compare cross-fertilization
Other Word Forms
- self-fertilized adjective
- self-fertilizing adjective
Etymology
Origin of self-fertilization
First recorded in 1855–60
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Among a handful of species exist hermaphrodites capable of self-fertilization.
From Science Daily
The researchers tried to collect additional mushrooms in New Jersey and New York, where the fungus is spreading less quickly, but they didn’t find evidence of self-fertilization.
From Science Magazine
For plants such as tomatoes and peppers, that must be done by hand, a truly laborious task, especially if the flower has to have its pollen parts removed first to avoid self-fertilization.
From Washington Post
The new move would be no surprise to Charles Darwin, who in 1876 suggested that flowers in places with few pollinators would likely engage in self-fertilization.
From Science Magazine
Modern maize breeders have systematically reduced the effects of this constant mutational pressure through artificial selection and self-fertilization, which have exposed rare recessive variants in elite inbred lines5.
From Nature
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.