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1. What tool do geneticists use to study the genetics of families through generations?

2. Cystic fibrosis is a recessive disorder. If a couple, each of whom is heterozygous, have children, what is the probability that they will have a child with cystic fibrosis?

3. Blood types (A, B, and O) are controlled by

4. If a homozygous dominant long-haired dog is crossed with a homozygous recessive short-haired dog, what will be the phenotype of the offspring?

5. Males more commonly are affected by X-linked recessive genetic disorders than are females because

6. Which of the following procedures is used to amplify DNA in the laboratory?

7. Which of the following diseases has gene therapy been successful in curing?

8. Which of the following describes most accurately the expression “recombinant DNA”?

9. What organ system is affected in SCID-X1?

10. The term “biotech barnyards” refers to

11. Which of the following techniques reveals differences in the number of tandem repeats among individuals?

12. Klinefelter syndrome (XXY) is most easily diagnosed by ___________________.

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