Complete dominance – the dominant trait completely suppressed the recessive trait and did not allow it to manifest itself. With incomplete dominance, the dominant trait partially suppresses the recessive one. The presence of a Rhesus factor, polydactyly, freckles, dark hair color. All these signs are dominant and will not produce; manifest in recessive phenotype.
In nature, incomplete dominance is very widespread. This phenomenon is noted in the inheritance of various morphological and physiological characters both in plants and in animals and humans, for example, this is the inheritance of the color of cattle, the coloring of corollas of plant flowers, plumage of birds, and curly hair in humans.
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