THE Test Bank for Development Through the Lifespan 7th Edition Berk

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Berk


CHAPTER 2
GENETIC AND ENVIRONMENTAL FOUNDATIONS

MULTIPLE CHOICE

1. Christine is 5′7″ and has blue eyes. Such directly observable characteristics are called __________.
A) alleles
B) phenotypes
C) chromosomes
D) genotypes

Answer: B
Page Ref: 43
Skill Level: Apply
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Moderate

2. Phenotypes depend in part on an individual’s __________.
A) cells
B) chromosomes
C) genotype
D) DNA

Answer: C
Page Ref: 43
Skill Level: Remember
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Moderate

3. Our __________ determine(s) our species and influences all our unique characteristics.
A) genotype
B) phenotypes
C) regulator genes
D) karyotype

Answer: A
Page Ref: 43
Skill Level: Remember
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Easy

4. The __________ is the control center of a cell in the human body.
A) genotype



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B) gamete
C) autosome
D) nucleus

Answer: D
Page Ref: 44
Skill Level: Remember
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Easy

5. Chromosomes look like __________.
A) spheres
B) cones
C) rods
D) cubes

Answer: C
Page Ref: 44
Skill Level: Remember
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Easy

6. Which statement about human chromosomes is true?
A) They come in 46 matching pairs.
B) They store and transmit genetic information.
C) In females, each chromosome is inherited from the mother.
D) Each member of a pair is a different length, size, and genetic function.

Answer: B
Page Ref: 44
Skill Level: Understand
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Moderate

7. A __________ is a segment of DNA along the length of the chromosome.
A) phenotype
B) genotype
C) gene
D) gamete

Answer: C
Page Ref: 44
Skill Level: Remember



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Test Bank for Berk, Development Through the Lifespan, 7e


Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Easy

8. Protein-coding genes __________.
A) directly affect our body’s characteristics
B) modify instructions given by regulator genes
C) come in 23 matching pairs
D) are formed through meiosis

Answer: A
Page Ref: 44
Skill Level: Understand
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Moderate

9. The area surrounding the cell nucleus is called the __________.
A) zygote
B) cytoplasm
C) gamete
D) gene

Answer: B
Page Ref: 44
Skill Level: Remember
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Easy

10. __________, which trigger chemical reactions throughout the body, are the biological foundation on
which our characteristics are built.
A) Phenotypes
B) Proteins
C) Carbohydrates
D) Autosomes

Answer: B
Page Ref: 44
Skill Level: Remember
Objective: 2.1 What are genes, and how are they transmitted from one generation to the next?
Topic: Genetic Foundations
Difficulty Level: Moderate

11. Lynn, a Canadian, and Sasha, a Russian, are probably about __________ percent genetically identical.
A) 69.6



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