Which of the examples below are polymorphic traits? Select all that apply.
A. Lactose tolerance and intolerance in humans.
B. A population of lilies that contains equal proportions of both blue and white flowering individuals.
C. The A, B, and O blood types found in humans.
D. Hair loss in malnourished, captive chimpanzees.
E. The change from white coat in winter to brown coat in summer in Arctic fox populations.
Answer: C
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