overdominance

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overdominance

[¦ō·vər′däm·ə·nəns]
(genetics)
Monohybrid heterosis, that is, the phenotype is being more pronounced in the heterozygote than in either homozygote with respect to a specified pair of alleles.
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Allelic genealogy under overdominant and frequency- dependent selection and polymorphism of major histocompatibility complex loci.
Genomewide pattern of synonymous nucleotide substitution in two complete genomes of Mycobacterium tuberculosis. (Dispatches)
This was a better performance than the Beethoven much bolder and more decisive and with more character, although the piano was perhaps a little overdominant.
Fascinating and thoughtful; Vanbrugh String Quartet with John McCabe piano Royal Pump Room, Leamington
Their study indicates the presence of an overdominant autosomal major gene affecting litter size in Baluchi sheep.
Association of polymorphisms in fecundity genes of GDF9, BMP15 and BMP15-1B with litter size in Iranian Baluchi sheep

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