Test Bank For Infants and Children Prenatal through Middle Childhood 8th Edition

CHAPTER 2
GENETIC AND ENVIRONMENTAL FOUNDATIONS

MULTIPLE CHOICE

1. 1) Hair color is an example of A) karyotype.

   B) phenotype. C) gamete. D) genotype.

   Answer: B

   Page Ref: 51 Skill: Remember Objective: 2.1

2. 2) Directly observable characteristics are affected by an individual’s lifelong history of experiences and also by the individual’s

   A) karyotype. B) phenotypes. C) gametes. D) genotype.

   Answer: D

   Page Ref: 51 Skill: Understand Objective: 2.1

3. 3) A __________ is a complex blend of genetic information that determines our species and influences all our unique characteristics.

   A) chromosome B) genotype
   C) phenotype D) karotype

   Answer: B

   Page Ref: 51 Skill: Remember Objective 2.1

4. 4) The nucleus of a cell contains A) karotypes.

   B) chromosomes. C) genotypes.
   D) phenotypes.

   Answer: B

   Page Ref: 51 Skill: Remember Objective: 2.1

5. 5) Chromosomes
   A) store and transmit genetic information.
   2. B) come in 46 matching pairs.
   3. C) are inherited from the mother only.

   D) are inherited from the father only.

   Answer: A

   Page Ref: 51 Skill: Remember Objective: 2.1

6. 6) Generally, human __________ come in 23 matching pairs. A) chromosomes

   B) phenotypes C) cells
   D) genotypes

   Answer: A

   Page Ref: 51 Skill: Remember Objective: 2.1

7. 7) Each rung of the DNA ladder
   A) is made up of thousands of chromosomes.
   2. B) contains 20,000 genes.
   3. C) consists of a pair of chemical substances called bases.

   D) contains 23 matching pairs.

   Answer: C

   Page Ref: 52 Skill: Understand Objective: 2.1

8. 8) On the DNA ladder, adenine always appears A) alone.
   2. B) with thymine.
   3. C) with cytosine.

   D) with guanine.

   Answer: B

   Page Ref: 53 Skill: Remember Objective: 2.1

9. 9) An estimated 21,000 __________, which directly affect our body’s characteristics, lie along the human chromosomes. A) nuclei

   B) regulator genes
   C) protein-codinggenes D) sex genes

   Answer: C

   Page Ref: 52 Skill: Remember Objective: 2.1

10. 10) Zookeeper Ross knows that he shares some of his genetic makeup with the chimpanzee, Chumley. You could tell Ross that about _____ percent of their DNA is identical.

    A) 80 B) 85 C) 90 D) 95 Answer: D

    Page Ref: 52 Skill: Apply Objective: 2.1