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We are looking for the possible blood types of the PARENTS.

Offspring information:

  • Offspring type O -- can only be OO; therefore, received an O from each parent

Baby recieves one gene from each parent:

  • Parent can be AO giving the O to the child
  • Parent can be BO giving the O to the child
  • Parent can be OO giving one of the Os to the child
Crosses that will produce the OO (Type O) offspring:
  1. AO x AO = OO >> two heterozygous Type As
  2. AO x BO = OO >> heterozygous Type A and Type B
  3. AO x OO = OO >> heterozygous Type A and Type O
  4. BO x OO = OO >> heterozygous Type B and Type O
  5. BO x BO = OO >> two heterozygous Type Bs
  6. OO x OO = OO >> two Type O parents
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11y ago

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