Meaning of HETEROSIS
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 Webster's 1913 Dictionary |
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| | Definition: | | \Het`e*ro"sis\, n. [NL., fr. Gr. ? alteration, fr. ?
other, different.] (Rhet.)
A figure of speech by which one form of a noun, verb, or
pronoun, and the like, is used for another, as in the
sentence: ``What is life to such as me?'' --Aytoun.
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| Biology Dictionary |
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| | Definition: | | The observation that in some circumstances, the heterozygotes in a population have higher fitness than the homozygotes; for example they grow better, are better able to survive, and/or are more fertile than the homozygotes. The effect of heterosis can also apply to hybrids (thus "hybrid vigor"). |
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