Question 1

To view and analyze human chromosomes in a dividing cell, which of the following is (are) required?

Accepted Answer

A)  a scanning electron microscope 
B)  radioactive staining 
C)  fluorescent staining and a transmission electron microscope 
D)  DNA staining and a light microscope 
E)  a stain particular to human cells 
A)  a scanning electron microscope 
B)  radioactive staining 
C)  fluorescent staining and a transmission electron microscope 
D)  DNA staining and a light microscope 
E)  a stain particular to human cells

Question 2

After telophase I of meiosis, the chromosomal makeup of each daughter cell is

Accepted Answer

A)  diploid, and the chromosomes are each composed of a single chromatid. 
B)  diploid, and the chromosomes are each composed of two chromatids. 
C)  haploid, and the chromosomes are each composed of a single chromatid. 
D)  haploid, and the chromosomes are each composed of two chromatids. 
E)  tetraploid, and the chromosomes are each composed of two chromatids. 
A)  diploid, and the chromosomes are each composed of a single chromatid. 
B)  diploid, and the chromosomes are each composed of two chromatids. 
C)  haploid, and the chromosomes are each composed of a single chromatid. 
D)  haploid, and the chromosomes are each composed of two chromatids. 
E)  tetraploid, and the chromosomes are each composed of two chromatids.

Question 3

The following question refers to the essential steps in meiosis described below.
1. Formation of four new nuclei, each with half the chromosomes present in the parental nucleus
2. Alignment of homologous chromosomes at the metaphase plate
3. Separation of sister chromatids
4. Separation of the homologs; no uncoupling of the centromere
5. Synapsis; chromosomes moving to the middle of the cell in pairs
-Independent assortment of chromosomes is a result of

Accepted Answer

A)  the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I. 
B)  the random nature of the fertilization of ova by sperm. 
C)  the random distribution of the sister chromatids to the two daughter cells during anaphase II. 
D)  the relatively small degree of homology shared by the X and Y chromosomes. 
E)  the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I, the random nature of the fertilization of ova by sperm, the random distribution of the sister chromatids to the two daughter cells during anaphase II, and the relatively small degree of homology shared by the X and Y chromosomes. 
A)  the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I. 
B)  the random nature of the fertilization of ova by sperm. 
C)  the random distribution of the sister chromatids to the two daughter cells during anaphase II. 
D)  the relatively small degree of homology shared by the X and Y chromosomes. 
E)  the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I, the random nature of the fertilization of ova by sperm, the random distribution of the sister chromatids to the two daughter cells during anaphase II, and the relatively small degree of homology shared by the X and Y chromosomes.

Question 4

Refer to the life cycles illustrated in Figure 10.1 to answer the following questions.
   Figure 10.1
-In a life cycle such as that shown in part III of Figure 10.1, if the zygote's chromosome number is 10, which of the following will be true?

Accepted Answer

A)  The sporophyte's chromosome number per cell is 10 and the gametophyte's is 5. 
B)  The sporophyte's chromosome number per cell is 5 and the gametophyte's is 10. 
C)  The sporophyte and gametophyte each have 10 chromosomes per cell. 
D)  The sporophyte and gametophyte each have 5 chromosomes per cell. 
E)  The sporophyte and gametophyte each have 20 chromosomes per cell. 
A)  The sporophyte's chromosome number per cell is 10 and the gametophyte's is 5. 
B)  The sporophyte's chromosome number per cell is 5 and the gametophyte's is 10. 
C)  The sporophyte and gametophyte each have 10 chromosomes per cell. 
D)  The sporophyte and gametophyte each have 5 chromosomes per cell. 
E)  The sporophyte and gametophyte each have 20 chromosomes per cell.

Question 5

Refer to the life cycles illustrated in Figure 10.1 to answer the following questions.
   Figure 10.1
-Which of the life cycles is (are) typical for animals?

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  I and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  I and III

Exam 10: Meiosis and Sexual Life Cycles

To view and analyze human chromosomes in a dividing cell, which of the following is (are) required?

After telophase I of meiosis, the chromosomal makeup of each daughter cell is

Refer to the life cycles illustrated in Figure 10.1 to answer the following questions. Figure 10.1 -In a life cycle such as that shown in part III of Figure 10.1, if the zygote's chromosome number is 10, which of the following will be true?

Refer to the life cycles illustrated in Figure 10.1 to answer the following questions. Figure 10.1 -Which of the life cycles is (are) typical for animals?

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

The Cell Cycle

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Development, Stem Cells, and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Resource Acquisition, Nutrition, and Transport in Vascular Plants

Reproduction and Domestication of Flowering Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Reproduction and Development

Neurons, Synapses, and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Species Interactions

Ecosystems and Energy

Global Ecology and Conservation Biology

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