I keep getting “Incomplete dominance” questions wrong in Principles of Inheritance & Variation. What's the trap?
confusing incomplete dominance with codominance.
The usual trap: confusing incomplete dominance with codominance. How to avoid it: incomplete = blend (pink); codominance = both show (roan, AB blood). Go back to the definition — heterozygotes show a blended, intermediate phenotype (red × white → pink).
Key point
Incomplete dominance
Common mistake
confusing incomplete dominance with codominance.
Memory tip
incomplete = blend (pink); codominance = both show (roan, AB blood).
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