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Understanding Codominance and Incomplete Dominance in Genetics

Learn about codominance where both traits are expressed, like in human blood type AB, and incomplete dominance where traits blend, as seen in flowers. Explore examples and similarities in animals and plants.

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Understanding Codominance and Incomplete Dominance in Genetics

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  1. Codominanceand Incomplete Dominance

  2. Codominance: both traits are expressed (in animals) Ex: human blood type AB makes both anitgen A and antigen B

  3. Ex: Cattle RR – red (rusty brown) WW- white RW- Roan (red and white) *Not Pink P1 = WW x RW

  4. Incomplete dominance: one does not completely hide the other, traits blend (in plants) Ex: flowers P1 = RR x RW RR - red WW - white RW - pink

  5. Four o’clocksare flowersthat exhibit incomplete dominance

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