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Science Concepts
Using Science Graphics
Writing Skills

2. 1. The passing of traits from parent to offspring is called
A. heredity.
B. probability.
C. assortment.
D. reproduction.

3. 1. The passing of traits from parent to offspring is called
A. heredity.
B. probability.
C. assortment.
D. reproduction.

4. 2. In a breeding experiment, what are the offspring of true-breeding parents called?
F. F1 generation
G. F2 generation
H. dominant generation
J. recessive generation

5. 2. In a breeding experiment, what are the offspring of true-breeding parents called?
F. F1 generation
G. F2 generation
H. dominant generation
J. recessive generation

6. 3. What characteristic is described in the statement, “The dog’s coat is brown”?
A. pedigree
B. genotype
C. phenotype
D. dominance

7. 3. What characteristic is described in the statement, “The dog’s coat is brown”?
A. pedigree
B. genotype
C. phenotype
D. dominance

8. 4. What term describes a gene with two dominant alleles that are expressed at the same time?
F. mutational
G. incompletely dominant
H. codominant
J. polygenic

9. 4. What term describes a gene with two dominant alleles that are expressed at the same time?
F. mutational
G. incompletely dominant
H. codominant
J. polygenic

10. 5. The owner of a pet store wants to breed more animals that have a certain color of fur. What tool might the pet-store owner use to predict which animals have inherited the fur color gene?
A. pedigree
B. microscope
C. karyote
D. mutation

11. 5. The owner of a pet store wants to breed more animals that have a certain color of fur. What tool might the pet-store owner use to predict which animals have inherited the fur color gene?
A. pedigree
B. microscope
C. karyote
D. mutation

12. 6. What does the law of segregation state?
F. The two alleles for a gene separate when gametes are formed.
G. A species can have a variety of different alleles that code for a single characteristic.
H. The alleles of different genes separate independently from one another during gamete formation.
J. Populations of a single species divided geographically will change over time to form two separate species.

13. 6. What does the law of segregation state?
F. The two alleles for a gene separate when gametes are formed.
G. A species can have a variety of different alleles that code for a single characteristic.
H. The alleles of different genes separate independently from one another during gamete formation.
J. Populations of a single species divided geographically will change over time to form two separate species.

14. 7. What are the genotypes of the parents represented in this cross?
Use the diagram of the Punnett square shown below to answer the next question.
7. What are the genotypes of the parents represented in this cross?
A. Rr and Rr
B. RR and rr
C. Rr and rr
D. rr and rr

15. 7. What are the genotypes of the parents represented in this cross?
Use the diagram of the Punnett square shown below to answer the next question.
7. What are the genotypes of the parents represented in this cross?
A. Rr and Rr
B. RR and rr
C. Rr and rr
D. rr and rr

16. 8. What genotypic ratio is expected in the offspring of this cross?
Use the diagram of the Punnett square shown below to answer the next question.
8. What genotypic ratio is expected in the offspring of this cross?
F. 1:1
G. 1:2
H. 1:3
J. 1:4

17. 8. What genotypic ratio is expected in the offspring of this cross?
Use the diagram of the Punnett square shown below to answer the next question.
8. What genotypic ratio is expected in the offspring of this cross?
F. 1:1
G. 1:2
H. 1:3
J. 1:4

18. Use the table below to answer the next two questions.
9. What is the approximate average ratio of the dominant traits to recessive traits?
A. 1:0
B. 2:1
C. 1:2
D. 3:1

19. Use the table below to answer the next two questions.
9. What is the approximate average ratio of the dominant traits to recessive traits?
A. 1:0
B. 2:1
C. 1:2
D. 3:1

20. 10. What kind of cross would result in these ratios?
F. two heterozygous parents
G. two homozygous recessive parents
H. two homozygous dominant parents
J. one heterozygous parent and one homozygous parent

21. 10. What kind of cross would result in these ratios?
F. two heterozygous parents
G. two homozygous recessive parents
H. two homozygous dominant parents
J. one heterozygous parent and one homozygous parent

22. 11. Write a paragraph that summarizes the relationship between chromosomes and genes.

23. 11. Write a paragraph that summarizes the relationship between chromosomes and genes.
Student paragraphs should be well-formed and free of grammatical and scientific errors. Genes are found on chromosomes.