| dominance threshold number | The number at which 50 percent of the total dominance measure for a given stratum is represented by one or more plant species when ranked in descending order of abundance (i.e., from most to least abundant), when this number is immediately exceeded, the dominant species for the stratum are realised. (09 Oct 1997) |
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| incomplete dominance | <genetics> Two alleles of a gene which result in distinctly different phenotypes, but when they are both inherited together in an individual (one from the mother and one from the father - called heterozygosity), the individual ends up with a blend of the two phenotypes. For example: if one allele is for red hair and the other allele is for blue hair, then the individual will have purple hair. (This is in contrast to codominance, where the individual would inherit patches of blue and patches of red hair). (13 Nov 1997) |
| false dominance | Simulation by a recessive trait of the pedigree of dominant inheritance (i.e., recurrence in several generations) by repeated, and often occult, consanguineous matings. Synonym: false dominance. (05 Mar 2000) |