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Based on the "Genetic Factors in Inheritance Quick Check" on your screen, here is the question and the available answer choices for Item 2:
Question: Which is an example of codominance? (1 point)
Answers:
black and brown spotted coat color in horses
tall and short plant heights
black and yellow coat color in Labrador retrievers
seed shape in pea plants
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Answer: black and brown spotted coat color in horses.
Reason: Codominance occurs when both alleles are expressed equally in the heterozygote, producing distinct patches or simultaneous expression of both phenotypes. The other choices are classic dominance/recessive traits (tall/short, pea seed shape) or involve epistasis in Labradors (yellow masks black/brown).
Reason: Codominance occurs when both alleles are expressed equally in the heterozygote, producing distinct patches or simultaneous expression of both phenotypes. The other choices are classic dominance/recessive traits (tall/short, pea seed shape) or involve epistasis in Labradors (yellow masks black/brown).
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