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[mass noun] The tendency of a cross-bred individual to show qualities superior to those of both parents.Also called heterosis
- ‘We therefore think that the results are more easily explained if immigrant genes are selectively favored, for instance, by hybrid vigor, which has been shown for one of the metapopulations.’
- ‘This phenomenon is commonly denoted as midparent heterosis of hybrid vigor.’
- ‘The molecular basis of hybrid vigor has remained unknown despite the importance of this phenomenon in evolution and in practical breeding programs.’
- ‘The causes of inbreeding depression and the converse phenomenon of heterosis or hybrid vigor remain poorly understood despite their scientific and agricultural importance.’
- ‘Utilization of hybrid vigor or heterosis has been successful in cross-pollinated crops, of which maize is a primary example.’
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