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Biology, 12.01.2020 22:31 MINDYDELANO

Blood type in humans is an example of trait that has multiple alleles. the alleles for type a blood and type b blood are codominant, and type o blood is recessive to both type a and type b. if a girl with type ab blood has a brother with type o blood and a sister with type b blood, which of the following genotypes could it be possible for their parents to have?

ao and bo

ab and oo

ab and bo

ao and ab

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