Heterosis
Heterosis
Heterosis (pronunciation: /hɛtəˈroʊsɪs/), also known as hybrid vigor or outbreeding enhancement, is a phenomenon in genetics where the offspring's genetic traits are superior to those of its parents. The term was coined by George Harrison Shull in 1914.
Etymology
The term "Heterosis" is derived from the Greek words "hetero-", meaning different, and "-osis", meaning condition. It was first used in the context of genetics by George Harrison Shull.
Explanation
Heterosis refers to the increased strength of different characteristics in hybrids; the possibility to obtain a genetically superior individual by combining the virtues of its parents. Heterosis is often used in plant breeding and animal breeding to produce hybrids that have improved yield or other desirable traits.
Related Terms
- Hybrid (biology): The offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.
- Inbreeding: The production of offspring from the mating or breeding of individuals or organisms that are closely related genetically.
- Crossbreeding: The process of breeding an animal with purebred parents of two different breeds, varieties, or populations.
- Genetic Variation: The difference in DNA among individuals or the differences between populations.
See Also
External links
- Medical encyclopedia article on Heterosis
- Wikipedia's article - Heterosis
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