Biology / Unit 5 Bio 1041 short lesson, about 20 seconds
Codominance
Captions available
The idea
Codominance expresses both alleles fully and simultaneously in a heterozygote, rather than blending them into one intermediate trait.
In practice
Roan cattle coat color shows both red and white hairs together in a roan heterozygote, neither hair color masked nor blended.
Where people slip
Codominance shows both traits fully at once; incomplete dominance shows one merged, intermediate trait instead.
Your place on the trail
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Builds on
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