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Biology

Eric P. Widmaier; Linda E. Graham; Robert J. Brooker

Chapter 16

Simple Patterns of Inheritance - all with Video Answers

Educators

WG

Chapter Questions

02:04

Problem 2

During which phase of nuclear division does Mendel's law of segregation physically occur?
a. mitosis
b. meiosis I
c. meiosis II
d. all of the above
e. $b$ and $c$ only

Kathleen Jerome
Kathleen Jerome
Numerade Educator
00:43

Problem 3

An individual that has two different alleles of a particular gene is said to be
a. dihybrid.
d. heterozygous.
b. recessive.
e. hemizygous.
c. homozygous.

WG
Win Griffith
Numerade Educator
02:43

Problem 4

Which of Mendel's laws cannot be observed in a single-factor cross?
a. segregation
b. dominance/recessiveness
c. independent assortment
d. codominance
e. All of the above can be observed in a single-factor cross.

Kathleen Jerome
Kathleen Jerome
Numerade Educator
01:51

Problem 5

During a _____ cross, an individual with the dominant phenotype and unknown genotype is crossed with a individual to determine the unknown genotype.
a. single-factor, homozygous recessive
b. two-factor, heterozygous
c. test, homozygous dominant
d. single-factor, homozygous dominant
test, homozygous recessive

Kathleen Jerome
Kathleen Jerome
Numerade Educator
03:13

Problem 6

A woman is heterozygous for an X-linked disorder, hemophilia A. If she has a child with a man without hemophilia A, what is the probability that the child will be a male with hemophilia A? (Note: The child could be a male or female.)
a. $100 \%$
b. $75 \%$
c. $50 \%$
d. $25 \%$
e. $0 \%$

Kathleen Jerome
Kathleen Jerome
Numerade Educator
02:18

Problem 7

A gene that affects more than one trait is said to be
a. dominant.
d. pleiotropic.
b. wild-type.
e. heterozygous.
c. dihybrid.

Kathleen Jerome
Kathleen Jerome
Numerade Educator
00:58

Problem 8

A hypothetical flowering plant species produces blue, light blue, and white flowers. To determine the inheritance pattern, the following crosses were conducted with the results indicated: blue $\times$ blue $\rightarrow$ all blue white $\times$ white $\rightarrow$ all white blue $\times$ white $\rightarrow$ all light blue
What type of inheritance pattern does this represent?
a. simple Mendelian
d. incomplete dominance
b. X-linked
e. pleiotropy
c. codominance

WG
Win Griffith
Numerade Educator
01:45

Problem 9

Genes located on a sex chromosome are said to be
a. X-linked.
b. dominant.
c. hemizygous.
d. sex-linked.
e. autosomal.

Kathleen Jerome
Kathleen Jerome
Numerade Educator
01:08

Problem 10

A man and woman are both heterozygous for the recessive allele that causes cystic fibrosis. What is the probability that their first two offspring will have the disorder?
a. 1
b. $1 / 4$
c. $1 / 16$
d. $1 / 32$
e. 0

WG
Win Griffith
Numerade Educator
03:00

Problem 16

Based on Mendel's experimental crosses, what is the expected $\mathrm{F}_{2}$ phenotype ratio of a single-factor cross?
a. 1: 2: 1
b. 2: 1
c. 3: 1
d. 9: 3: 3: 1
e. 4: 1

Kathleen Jerome
Kathleen Jerome
Numerade Educator