Download Chapter 5 mc

Chapter 5 mc
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
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1. What step did Mendel take to be sure that his pea plants cross-pollinated?
a. He used two white plants.
b. He removed the anthers of one plant.
c. He added anthers to both plants.
d. He used plants that were not true breeding.
2. What happens when a true-breeding plant self-pollinates?
a. One of its offspring has the same traits as the parent.
b. Some of its offspring have the same traits as the parent.
c. All of its offspring have the same traits as the parent.
d. None of its offspring have the same traits as the parent.
3. Why were ratios important in Mendel’s work?
a. They showed that heredity does not follow a set pattern.
b. They showed that some traits are never passed on.
c. They showed the relationship between two different things.
d. They showed that some recessive traits are really dominant.
4. Each parent gives one set of these to the offspring.
a. genes
c. phenotypes
b. alleles
d. meiosis
5. Which one of the following statements is NOT true?
a. One gene can influence many traits.
b. Several genes can influence a single trait.
c. The environment can have an influence on traits.
d. Genes are the only influence on traits.
6. Asexual reproduction relates to humans in that
a. none of our body cells reproduce this way.
b. many body cells reproduce this way.
c. the parent cells do not divide.
d. meiosis occurs.
7. How are sex cells different from other human cells?
a. Sex cells have more chromosomes.
b. Sex cells have half as many chromosomes.
c. Sex cells are larger.
d. Sex cells have no chromosomes.
8. Why do sex-linked disorders occur more often in males?
a. Males have two X chromosomes.
b. Males have only one X chromosome.
c. Males have two Y chromosomes.
d. Males have two X and two Y chromosomes.
9. The one thing that Gregor Mendel realized could explain the results of his experiments was that
a. the traits were appearing at random.
b. the male traits were always the dominant ones.
c. each trait had two sets of instructions, one from each parent.
d. his important research would open the door to modern genetics.
____ 10. What carries the genes that determine sex?
a. homologous chromosomes
c. sex chromosomes
b. pedigree
d. phenotype
____ 11. Instructions for an inherited trait are called
a. alleles.
c. albinism.
b. phenotype.
d. genes.
____ 12. The different forms of a gene that decide a characteristic are known as
a. alleles.
c. albinism.
b. phenotypes.
d. genes.
____ 13. What did Mendel discover about recessive traits?
a. Recessive traits reappear in the second generation.
b. Recessive traits disappear altogether.
c. Recessive traits never appear in the second generation.
d. Recessive traits become dominant.
____ 14. Which one of the following is the name for the way cells divide in asexual reproduction?
a. twins
c. meiosis
b. mitosis
d. homologous
____ 15. This diagram is used to trace a trait through generations of a family.
a. pedigree
c. meiosis
b. selective breeding
d. generation square
____ 16. What are chromosomes that carry the same sets of genes?
a. twin chromosomes
c. ordinary chromosomes
b. homologous chromosomes
d. asexual chromosomes
____ 17. What is a feature that has different forms in a population?
a. pedigree
c. fertilization
b. characteristic
d. trait
____ 18. What is a trait?
a. different forms of meiosis
c. different forms of chromatids
b. different forms of a pedigree
d. different forms of a characteristic
____ 19. When a plant fertilizes itself, it is called a(n)
a. allele plant.
c. self-pollinating plant.
b. true-breeding plant.
d. cross-pollinating plant.
____ 20. When there is incomplete dominance,
a. one allele has more influence than the others.
b. each allele has its own degree of influence.
c. the alleles have no influence.
d. there are no alleles present.
____ 21. What kind of plant produces offspring with the same traits as the parent?
a. self-pollinating
c. true-breeding
b. cross-pollinating
d. nonbreeding
____ 22. Offspring that are different from both parents are produced by
a. asexual reproduction.
c. sexual reproduction.
b. something going wrong.
d. mitosis.
____ 23. What is heredity?
a. traits passing from offspring to parents
b. traits passing from parents to offspring
c. plants that are cross-pollinated
d. the ratio of dominant to recessive traits
____ 24. What is a plant that has two dominant genes or two recessive genes called?
a. organism
c. homozygous
b. genotype
d. heterozygous
____ 25. What is Mendel’s ratio for dominant to recessive traits?
a. 1 to 1
c. 3 to 1
b. 2 to 1
d. 4 to 1
____ 26. What is a phenotype?
a. the way an organism feels
c. a dominant gene
b. a group of 5 alleles
d. the way an organism looks
____ 27. What is it called when cells are copied with half the number of chromosomes?
a. sex cells
c. a nucleus
b. meiosis
d. mitosis
Matching
Match each item with the correct statement.
a. cross-pollination
b. dominant trait
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29.
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31.
appearing in the second generation
appearing in the first generation
passing of traits from parents to offspring
fertilization of one plant to another
Match each item with the correct statement.
a. phenotype
b. genotype
c. incomplete dominance
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d. Punnett square
e. probability
when one trait is not completely dominant over another
a way to organize possible offspring combinations
an organism’s appearance
the entire genetic makeup of an organism
the mathematical chance that something will happen
Match each item with the correct statement.
a. selective breeding
b. meiosis
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c. recessive trait
d. heredity
c. pedigree
d. mitosis
process that produces cells with half the chromosomes
process where the nucleus divides once
used to create bigger and better things
used to trace traits in a family
Match each item with the correct statement.
a. phenotype
b. Punnett square
c. homozygous
d. heterozygous
e. cross-pollination
f. probability
g. genotype
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42.
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formed from both inherited alleles
occurs when a plant pollinates a different kind of plant
used to organize possible offspring combinations
the mathematical chance that something will happen
an organism’s appearance
a plant with one dominant and one recessive gene
a plant with either two dominant or two recessive genes
Other
INTERPRETING GRAPHICS
Use the figure below to answer the following questions.
48. Why are all first generation flowers gray?
a. Gray is the dominant color.
c. Gray is the darker color.
b. Gray is the recessive color.
d. It is just a coincidence.
49. What ratio explains the gray flowers and white flower in the second generation?
a. 1 to 1
c. 3 to 1
b. 2 to 1
d. 4 to 1
50. What is the difference between the pollination in the first generation and the second generation?
a.
b.
c.
d.
The first one was natural and the second was selective breeding.
The first one was selective breeding and the second one was natural.
They were both natural, but new plants were added before the second pollination.
They were both selective breeding, but the second one was not controlled.
Chapter 5 mc
Answer Section
MULTIPLE CHOICE
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MATCHING
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31.
ANS:
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C
B
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A
DIF:
DIF:
DIF:
DIF:
1
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1
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C
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E
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1
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OTHER
48. ANS:
A
DIF: 1
49. ANS:
C
REF: 1
OBJ: 2
DIF: 1
50. ANS:
B
REF: 2
OBJ: 3
DIF: 1
REF: 3
OBJ: 4