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Life Science

Science Sample Question 2

  A O
B AB B
O A O

This chart describes different genetic combinations that are possible when a mother has blood type A, with one A gene and one O (recessive) gene, and the father has blood type B, with one B gene and one O (recessive) gene.

Blood types that result from a mother with type A and a father with type B, when both parents have one O (recessive) gene

1. Their offspring will have a 100% chance of having blood type AB.
2. Their offspring will have a 75% chance of having blood type A.
3. Their offspring will have a 50% chance of having blood type B.
4. Their offspring will have a 50% chance of having blood type A.
5. Their offspring will have a 25% chance of having blood type O.
(blank - no answer)
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