Biology

Sylvia S. Mader, Michael Windelspecht

Chapter 11

Mendelian Patterns of Inheritance - all with Video Answers

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Chapter Questions

Problem 1

Mendel’s work supported which of the following?
a. blending theory of inheritance
b. particulate theory of inheritance
c. theory of acquired characteristics
d. All of these are correct.

AM

Audrey Mcguire

Numerade Educator

Problem 2

Mendel’s success was based on
a. use of the pea plant as a model organism.
b. his ability to apply statistics to his studies.
c. careful planning of his experiments.
d. All of these are correct.

James Thierer

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Problem 3

The law of segregation states all of the following except
a. factors separate during formation of the gametes.
b. each individual has two factors for each trait.
c. gametes contain a single factor for each trait.
d. factors assort independently of each other by meiosis.

Jade Schlamb

Numerade Educator

Problem 4

In peas, yellow seed $(Y \text { is dominant over green seed }(y) . \text { In }$ the $\mathrm{F}_{2}$ generation of a monohybrid cross that begins when a dominant homozygote is crossed with a recessive homozygote, you would expect
a. three plants with yellow seeds to every plant with green seeds.
b. plants with one yellow seed for every green seed.
c. only plants with the genotype Yy.
d. only plants that produce yellow seeds.
e. Both c and d are correct.

CN

Christopher Norrie

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Problem 5

In guinea pigs, smooth coat $(S)$ is dominant over rough coat $(s),$ and black coat $(B)$ is dominant over white coat $(b) .$ In the cross $S s B b \times S s B b,$ how many of the offspring will have a smooth black coat, on average?
a. 1$/ 4$
b. about 9$/ 16$
C. 1$/ 16$
d. 6$/ 16$
e. 2$/ 6$

Brooke Beard

Numerade Educator

Problem 6

In horses, $B=$ black coat, $b=$ brown coat, $T=$ trotter, and $t=$ pacer. $A$ black trotter that has a brown pacer offspring has which of the following genotypes?
a. $B T$
b. $B b T t$
c. $b b t t$
d. $B B t t$
e. $B B T$

James Thierer

Numerade Educator

Problem 7

Which of the following is not correct for an autosomal recessive pedigree?
a. Males inherit the trait 50$\%$ of the time.
b. Heterozygous individuals are carriers.
c. Only homozygous recessive individuals express the trait.
d. Homozygous dominant individuals and heterozygotes have the same phenotype.

A. Elizabeth Hildreth

A. Elizabeth Hildreth

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Problem 8

Cystic fibrosis is an example of a/an _________ trait.
a. autosomal dominant c. X-linked
b. autosomal recessive d. incomplete dominant

James Thierer

Numerade Educator

Problem 9

When analyzing a pedigree, you notice that two unaffected parents have produced a child that is affected by the trait. This suggests which of the following patterns of inheritance?
a. autosomal dominant c. autosomal recessive
b. X-linked d. All of these are correct.

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Problem 10

For questions 10–14, match the statements to the items in the key.
Key:
a. multiple alleles
b. polygenic trait
c. pleiotropic gene
d. incomplete dominance

A single gene produces a variety of phenotypes.

James Thierer

Numerade Educator

Problem 11

For questions 10–14, match the statements to the items in the key.
Key:
a. multiple alleles
b. polygenic trait
c. pleiotropic gene
d. incomplete dominance

Multiple genes are involved, and the distribution resembles a bell-shaped curve.

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Problem 12

For questions 10–14, match the statements to the items in the key.
Key:
a. multiple alleles
b. polygenic trait
c. pleiotropic gene
d. incomplete dominance

In humans, there are three possible alleles at the chromosomal locus that determine blood type.

James Thierer

Numerade Educator

Problem 13

For questions 10–14, match the statements to the items in the key.
Key:
a. multiple alleles
b. polygenic trait
c. pleiotropic gene
d. incomplete dominance

A cross of two heterozygous individuals produces an intermediate phenotype.

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Problem 14

For questions 10–14, match the statements to the items in the key.
Key:
a. multiple alleles
b. polygenic trait
c. pleiotropic gene
d. incomplete dominance

The environment may influence the phenotypic distribution of the trait.

James Thierer

Numerade Educator