Using Punnett squares, determine the phenotypes of offspring that the following

Q: Using Punnett squares, determine the phenotypes of offspring that the following

A. Trait A and B is autosomal dominant. 1. There is no chance of developing cancer. 2. 50% 3. 50% 4. All daughters will be affected.

ID: 201835 • Letter: U

Question

Using Punnett squares, determine the phenotypes of offspring that the following parents could produce. For some situations, there could be more than one genotype for at least one of the parents. In these cases, be sure to include Punnett squares for all possibilities, and give the probability that their third unborn child may be at risk for developing cancer.

1.An autosomal recessive trait with an unaffected mother and an affected father.

2.An autosomal dominant trait with an affected mother and an unaffected father

3.An X-linked recessive trait with an unaffected mother and an affected father.

4. An X-linked dominant trait with an unaffected mother and an affected father.

ASeparase 4 B.Topoisomerase 4 defect defect 10 10 12 13 1112 13 15 14 15

Explanation / Answer

Trait A and B is autosomal dominant.

1. There is no chance of developing cancer.

2. 50%

3. 50%

4. All daughters will be affected.

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Using Punnett squares, determine the phenotypes of offspring that the following

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