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, GENETICS FROM GENES TO GENOMES 6TH EDITION HARTWELL TEST BANK
Genetics, 6e (Hartwell)
Chapter 2 Mendel's Principles of Heredity
1) Why did Mendel perform reciprocal crosses?
A) To obtain enough plants to perform the experiments that Mendel wanted.
B) To test a hypothesis that stated the ovum carries all the information for progeny.
C) To be able to breed plants year round.
D) To determine whether the inheritance of a trait depends on which parent carries the trait.
Answer: D
Section: 2.01
Topic: Background - The Historical Puzzle of Inheritance
Learning Objective: 02.01.03 Explain the importance of Mendel's inclusion of reciprocal
crosses within his controlled breeding program of pea plants.
Bloom's: 2. Understand
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2) What is the difference between cross- and self-fertilization?
A) In cross-fertilization the pollen from one plant is used to fertilize the egg of another plant.
B) In cross-fertilization the pollen from one plant is used to fertilize the egg from the same plant.
C) In self-fertilization the pollen from one plant is used to fertilize the egg from another plant.
D) In cross-fertilization insects are used to pollinate the plants, whereas in self-fertilization the
investigator pollinates the plants.
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Answer: A
Section: 2.01
Topic: Background - The Historical Puzzle of Inheritance
Learning Objective: 02.01.02 Describe how Mendel cross-fertilized and self-fertilized pea
plants.
Bloom's: 2. Understand
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3) What is the outcome of crossing two pure-breeding plants with antagonistic traits?
A) Only one of the traits will be seen in the progeny.
B) Both traits will be seen in the progeny.
C) Both traits will be seen in the progeny in a 3:1 ratio.
D) Only one trait will be seen and it will be the trait of the female.
Answer: A
Section: 2.01
Topic: Background - The Historical Puzzle of Inheritance
Learning Objective: 02.01.04 Predict the type of progeny produced by Mendel's crosses
between pure-breeding plants with discrete, antagonistic traits, such as purple versus white
flowers.
Bloom's: 2. Understand
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, GENETICS FROM GENES TO GENOMES 6TH EDITION HARTWELL TEST BANK
4) According to Mendel's Law of Independent Assortment,
A) alleles of genes on different chromosomes assort randomly into different gametes.
B) alleles of genes assort into gametes grouped according to how they were inherited originally.
C) dominant alleles for one gene must assort into the same gamete as the dominant alleles for
another gene.
D) dominant alleles for one gene must assort into the same gamete as the recessive alleles for
another gene.
Answer: A
Section: 2.02
Topic: Genetic Analysis According to Mendel
Learning Objective: 02.02.03 Explain Mendel's law of independent assortment and how the
9:3:3:1 phenotypic ratio in a dihybrid cross provides evidence for this law.
Bloom's: 1. Remember
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5) An Ss × Ss mating is performed. If the phenotypic ratio of the progeny is 3 S– (– indicates that
the other allele is unknown) to 1 ss, then
A) the S allele is dominant to the s allele.
B) neither allele is dominant.
C) the s allele is dominant to the S allele.
D) the relationship between the alleles cannot be determined.
Answer: A NURSINGTB.COM
Section: 2.02
Topic: Genetic Analysis According to Mendel
Learning Objective: 02.02.01 Explain Mendel's law of segregation and how it predicts the 3:1
dominant-to-recessive phenotypic ratio among the F2 generation of a monohybrid cross.
Bloom's: 4. Analyze
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6) Which of the following probabilities is correct regarding a mating of an Ss RR individual to an
individual who is Ss Rr ? (A – indicates the the second allele is either dominant or recessive.)
A) S– RR: 37.5%
B) Homozygous recessive: 10%
C) Heterozygous both alleles: 50%
D) ss R– : 15.5%
Answer: A
Section: 2.02
Topic: Genetic Analysis According to Mendel
Learning Objective: 02.02.05 Predict the genotypic and phenotypic ratios among progeny of
complex multihybrid crosses using simple rules of probability.
Bloom's: 3. Apply
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No reproduction or distribution without the prior written consent of McGraw-Hill Education.
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