Name
Date
Class
Chapter Test C
Genetics
Multiple Choice
Directions: On the line before each question or statement, write the letter of the correct answer.
1. A nucleotide is to a chromosome as
A. music is to words.
B. food is to nutrients.
C. people are to exercise.
D. words are to a paragraph.
2. A new plant species is discovered. Biologists note that some flowers have royal
blue petals and that others have white petals. A biologist cross-pollinated whiteflowering
plants with blue-flowering plants. What color petals will be observed
if there is incomplete dominance?
A. white
B. spotted
C. light blue
D. royal blue
Completion
Directions: On each line, write the term that correctly completes each sentence.
3. The passing of traits from parents to offspring is called
4.
.
occurs when multiple genes determine the phenotype of a
trait.
5. Offspring that result from the cross of parents with different forms of the same trait
are called
.
6. A deletion
occurs when one or more base pair is left out
of a DNA sequence.
7. A section of a chromosome that has genetic information for one trait is
a(n)
8. A(n)
.
shows the phenotypes of genetically related family
members.
9. Different forms of a gene are called
.
10. Having two different alleles for a gene results in a(n)
genotype.
11. Having two of the same allele for a gene makes a(n)
genotype.
12. Base pairs are added to the DNA sequence in a(n)
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mutation.
Genetics
Name
Date
Class
Chapter Test C continued
Interpreting a Table
Directions: Respond to each statement on the lines or in the space provided.
13. Construct a Punnett square for a cross between parents with the alleles CC and cc.
Assume that C is a dominant factor representing a chin cleft and that c is a recessive
factor representing a chin without a cleft.
14. Predict the phenotype of the offspring for the cross in question 13.
15. Construct a Punnett square for a cross between parents with the alleles Dd and Dd.
Assume that D is a dominant factor representing dimples and that d is a recessive factor
representing a face without dimples.
16. Calculate the percentage of offspring who would have dimples. Use the Punnett
square in question 15 to explain your answer.
Short Answer
Directions: Respond to each statement on the lines provided.
17. Contrast the role of RNA in translation and transcription.
Genetics
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Name
Date
Class
Chapter Test C continued
18. Contrast incomplete dominance and codominance.
19. Predict how Mendel’s results would have differed if he had not controlled the
breeding of plants in his experiments.
Concept Application
Directions: Respond to each statement on the lines provided. Use complete sentences.
20. Evaluate Mendel’s conclusion that two factors control each inherited trait and that
they always have a dominant-recessive relationship.
21. A dairy farm bred a hairless cow with a cow that had hair. The offspring had hair.
Assess whether you can conclude that the gene for hairlessness is dominant or
recessive.
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Genetics