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heterosis

File:Time_course_imaging_of_two_maize_inbreds_LH198_and_PHG47_and_their_F1_hybrid.gif · Wikimedia Commons · See Wikimedia Commons

EntityQ339051· pop 40· linked from 261 articles

Also known as hybrid vigor

thumb|300px|Time course imaging of two maize [[inbreds and their F1 hybrid (middle) exhibiting heterosis.]]

Research

5,093 papers

via PubMed

~20 min read

Encyclopedic overview

20 sections
Contents
  • Definitions
  • Genetic and epigenetic bases
  • Dominance and overdominance
  • Historical retrospective
  • Epigenetics
  • Specific mechanisms
  • Major histocompatibility complex in animals
  • Plants
  • Corn (maize)
  • Rice (''Oryza sativa'')
  • Animals
  • Hybrid livestock
  • Poultry
  • Dogs
  • Birds
  • Humans
  • Controversy
  • See also
  • References
  • Further reading

thumb|300px|Time course imaging of two maize [[inbreds and their F1 hybrid (middle) exhibiting heterosis.]]

Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents. The heterotic offspring often has traits that are more than the simple addition of the parents' traits, and can be explained by Mendelian or non-Mendelian inheritance. Typical heterotic/hybrid traits of interest in agriculture are higher yield, quicker maturity, stability, drought tolerance etc.

Excerpted from Wikipedia’s “heterosis” article, available under the CC BY-SA 4.0 licence.

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