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Chapter 11
Complex Inheritance and Human Heredity
Chapter Diagnostic
Questions
1. Identify the disease characterized by the
absence of melanin.
A. albinism
B. cystic fibrosis
C. galactosemia
D. Tay-Sachs
Chapter 11
Complex Inheritance and Human Heredity
Chapter Diagnostic
Questions
2. Under what circumstances will a recessive
trait be expressed?
A. A recessive allele is passed on by both
parents.
B. One parent passes on the recessive allele.
C. The individual is heterozygous for the trait.
D. The individual is homozygous dominant.
Chapter 11
Complex Inheritance and Human Heredity
11.1 Formative
Questions
3. Where do gametes come from?
A. skin cells.
B. the liver.
C. gonads
D. It is caused by acid excretion and results in
sterility
Chapter 11
Complex Inheritance and Human Heredity
11.1 Formative
Questions
4. Which is the genotype of a person who is
a carrier for a recessive genetic disorder?
A. DD
B. Dd
C. dd
D. dE
Chapter 11
Complex Inheritance and Human Heredity
11.2 Formative
Questions
5. When a homozygous male animal with black
fur is crossed with a homozygous female with
white fur, they have offspring with gray fur.
What type of inheritance does this represent?
A. dosage compensation
B. incomplete dominance
C. multiple alleles
D. sex-linked
Chapter 11
Complex Inheritance and Human Heredity
11.1 Formative
Questions
6. Albinism is a recessive condition. If an albino
squirrel is born to parents that both have normal
fur color, what can you conclude about the
genotype of the parents?
A. at least one parent is a carrier
B. both parents are carriers
C. both parents are homozygous recessive
D. at least one parent is homozygous dominant
Chapter 11
Complex Inheritance and Human Heredity
11.2 Formative
Questions
7. Of the 23 pairs of chromosomes in human
cells, one pair is the _______.
A. autosomes
B. centromere
C. monosomes
D. sex chromosomes
Chapter 11
Complex Inheritance and Human Heredity
11.2 Formative
Questions
8. Which is an example of a polygenic trait?
A. blood type
B. color blindness
C. hemophilia
D. skin color
Chapter 11
Complex Inheritance and Human Heredity
11.3 Formative
Questions
9. What does a karyotype show?
A. The blood type of an individual.
B. The locations of genes on a chromosome.
C. The cell’s chromosomes counted and
arranged in pairs.
D. The phenotype of individuals in a pedigree.
Chapter 11
Complex Inheritance and Human Heredity
11.3 Formative
Questions
10. What does this karyotype show?
A. normal male.
B. normal female.
C. Down’s syndrome male.
D. Down’s syndrome female.
Chapter 11
Complex Inheritance and Human Heredity
11.3 Formative
Questions
11. What is occurring in this
diagram?
A. multiple alleles
B. nondisjunction
C. mitosis
D. correct meiosis
Chapter 11
Complex Inheritance and Human Heredity
11.3 Formative
Questions
12. What condition occurs when a person’s
cells have an extra copy of chromosome 21?
A. Down syndrome
B. Klinefelter’s syndrome
C. Tay-Sachs syndrome
D. Turner’s syndrome
Chapter 11
Complex Inheritance and Human Heredity
Chapter Assessment
Questions
13. Use the figure to describe what the top horizontal
line between numbers 1 and 2 indicates.
A. 1 and 2 are siblings
B. 1 and 2 are parents
C. 1 and 2 are offspring
D. 1 and 2 are carriers
Chapter 11
Complex Inheritance and Human Heredity
Chapter Assessment
Questions
14. Which is not an allele
in the ABO blood group?
A. IA
B. IO
C. IB
D. i
Chapter 11
Complex Inheritance and Human Heredity
Standardized Test
Practice
15. If a genetic disorder is caused by a
dominant allele, what is the genotype of
those who do not have the disorder?
A. heterozygous
B. homozygous dominant
C. homozygous recessive
Chapter 11
Complex Inheritance and Human Heredity
Standardized Test
Practice
16. Analyze this pedigree showing the inheritance
of a DOMINANT genetic disorder. Which would
be the genotype of the first generation father?
A. RR
B. Rr
C. rr
Chapter 11
Complex Inheritance and Human Heredity
Standardized Test
Practice
17. Shorthorn cattle have an allele for both red and
white hair. When a red-haired cow is crossed with
a white-haired bull, their calf has both red and
white hairs scattered over its body. What type of
inheritance does this represent?
A. codominance
B. dosage compensation
C. epistasis
D. sex-linked
Chapter 11
Complex Inheritance and Human Heredity
Standardized Test
Practice
18. Analyze this pedigree showing the inheritance
of a recessive genetic disorder. Which would
be the genotype of II-2 ?
A. RR
B. Rr
C. rr
I
1
2
II
1
2
3
4
5
6
III
1
2
3
Chapter 11
Complex Inheritance and Human Heredity
Standardized Test
Practice
19. Why are males affected by recessive sexlinked traits more often than are females?
A. Males have only one X chromosome.
B. Males have two X chromosomes.
C. Males have only one Y chromosome.
D. The traits are located on the Y
chromosomes.
Chapter 11
Complex Inheritance and Human Heredity
Standardized Test
Practice
20. A carrier of hemophilia and her husband,
who is unaffected by the condition, are
expecting a son. What is the probability that
their son will have hemophilia?
A. 25%
B. 50%
C. 75%
D. 100%