,Chapter 2—Heredity and Conception
MULTIPLE CHOICE
1. Heredity is defined as
a. one’s nature, and is based upon biological transmission of traits and characteristics.
b. the spiral shaped structures found in cells.
c. traits that are determined by pairs of genes.
d. the process of cell division.
ANS: A REF: The Influence of Heredity OBJ: 1 DIF: Factual
2. The field within the science of biology that studies heredity is called
a. etiology.
b. genetics.
c. molecular biology.
d. gametogenesis.
ANS: B REF: The Influence of Heredity OBJ: 1 DIF: Factual
3. Genetics appears to play a role in not only the transmission of physical traits, such as height and
eye color, but also in
a. intelligence.
b. personality traits such as shyness and anxiety.
c. psychological problems such as schizophrenia and depression.
d. All of the above
ANS: D REF: The Influence of Heredity OBJ: 1 DIF: Factual
4. “Heredity” means
a. biological transmission of traits and characteristics.
b. how your traits manifest themselves in your characteristics.
c. how cells divide to determine who we become.
d. how genes combine to influence our phenotype.
ANS: A REF: The Influence of Heredity OBJ: 1 DIF: Factual
5. Chromosomes contain thousands of segments called
a. nuclei.
b. genes.
c. phosphates.
d. cytosines.
ANS: B REF: The Influence of Heredity OBJ: 1 DIF: Factual
6. What shape best describes chromosomes?
a. Cone
b. Rod
c. An X
d. An octagon
ANS: C REF: The Influence of Heredity OBJ: 1 DIF: Factual
31
, Chapter 2
7. A normal human cell contains ____ chromosomes organized into ____ pairs.
a. 20; 10
b. 32; 16
c. 46; 23
d. 48; 24
ANS: C REF: The Influence of Heredity OBJ: 1 DIF: Factual
8. Some traits, such as blood type, are transmitted by a single pair of genes. Other traits are
determined by combinations of pairs of genes. These traits are called
a. monogenic.
b. polygenic.
c. multigenic.
d. recessive.
ANS: B REF: The Influence of Heredity OBJ: 1 DIF: Factual
9. Polygenic traits
a. are transmitted by a single pair of genes.
b. are uncommon in humans.
c. are transmitted by the mother.
d. result in more complex characteristics.
ANS: D REF: The Influence of Heredity OBJ: 1 DIF: Conceptual
10. According to the International Genome Sequencing Consortium (2006), we have ____ genes in
every cell of our bodies:
a. 1,000-1,500
b. 10,000-20,000
c. 20,000-25,000
d. there has not been enough research to determine the number of genes in cells
ANS: C REF: The Influence of Heredity OBJ: 1 DIF: Factual
11. DNA takes the form of
a. a twisting ladder.
b. a straight ladder.
c. an octagon.
d. interlocking circles.
ANS: A REF: The Influence of Heredity OBJ: 1 DIF: Factual
12. In DNA, the sides of the ladder consist of alternating segments of phosphate and
a. adenine.
b. thymine.
c. cytosine.
d. simple sugar.
ANS: D REF: The Influence of Heredity OBJ: 1 DIF: Factual
32
MULTIPLE CHOICE
1. Heredity is defined as
a. one’s nature, and is based upon biological transmission of traits and characteristics.
b. the spiral shaped structures found in cells.
c. traits that are determined by pairs of genes.
d. the process of cell division.
ANS: A REF: The Influence of Heredity OBJ: 1 DIF: Factual
2. The field within the science of biology that studies heredity is called
a. etiology.
b. genetics.
c. molecular biology.
d. gametogenesis.
ANS: B REF: The Influence of Heredity OBJ: 1 DIF: Factual
3. Genetics appears to play a role in not only the transmission of physical traits, such as height and
eye color, but also in
a. intelligence.
b. personality traits such as shyness and anxiety.
c. psychological problems such as schizophrenia and depression.
d. All of the above
ANS: D REF: The Influence of Heredity OBJ: 1 DIF: Factual
4. “Heredity” means
a. biological transmission of traits and characteristics.
b. how your traits manifest themselves in your characteristics.
c. how cells divide to determine who we become.
d. how genes combine to influence our phenotype.
ANS: A REF: The Influence of Heredity OBJ: 1 DIF: Factual
5. Chromosomes contain thousands of segments called
a. nuclei.
b. genes.
c. phosphates.
d. cytosines.
ANS: B REF: The Influence of Heredity OBJ: 1 DIF: Factual
6. What shape best describes chromosomes?
a. Cone
b. Rod
c. An X
d. An octagon
ANS: C REF: The Influence of Heredity OBJ: 1 DIF: Factual
31
, Chapter 2
7. A normal human cell contains ____ chromosomes organized into ____ pairs.
a. 20; 10
b. 32; 16
c. 46; 23
d. 48; 24
ANS: C REF: The Influence of Heredity OBJ: 1 DIF: Factual
8. Some traits, such as blood type, are transmitted by a single pair of genes. Other traits are
determined by combinations of pairs of genes. These traits are called
a. monogenic.
b. polygenic.
c. multigenic.
d. recessive.
ANS: B REF: The Influence of Heredity OBJ: 1 DIF: Factual
9. Polygenic traits
a. are transmitted by a single pair of genes.
b. are uncommon in humans.
c. are transmitted by the mother.
d. result in more complex characteristics.
ANS: D REF: The Influence of Heredity OBJ: 1 DIF: Conceptual
10. According to the International Genome Sequencing Consortium (2006), we have ____ genes in
every cell of our bodies:
a. 1,000-1,500
b. 10,000-20,000
c. 20,000-25,000
d. there has not been enough research to determine the number of genes in cells
ANS: C REF: The Influence of Heredity OBJ: 1 DIF: Factual
11. DNA takes the form of
a. a twisting ladder.
b. a straight ladder.
c. an octagon.
d. interlocking circles.
ANS: A REF: The Influence of Heredity OBJ: 1 DIF: Factual
12. In DNA, the sides of the ladder consist of alternating segments of phosphate and
a. adenine.
b. thymine.
c. cytosine.
d. simple sugar.
ANS: D REF: The Influence of Heredity OBJ: 1 DIF: Factual
32
