â¢ TORNADO (noun). The noun TORNADO has 2 senses: 1. a localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground. 2. a purified and potent form of cocaine that is smoked rather than snorted. Familiarity information: TORNADO used as a noun is rare.
In other words, nothing is different about the way these alleles are inherited; the only difference is in the way the alleles determine phenotype when they are combined. As opposed to partial dominance, codominance occurs when the phenotypes of both parents are simultaneously expressed in the same offspring organism.
but a third, different phenotype. With incomplete dominance we get a blending of the dominant & recessive traits so that the third phenotype is something in the middle (red x white = pink). In COdominance, the recessive & dominant traits appear together in the phenotype of hybrid organisms.