Question 1

Which of the following outcomes is more likely to occur in an organism undergoing sexual reproduction than in an organism undergoing asexual reproduction?

Accepted Answer

A)  a rapid increase in population size 
B)  a decrease in genetic diversity 
C)  an increase in genetic diversity 
D)  a rapid colonization of new niches 
A)  a rapid increase in population size 
B)  a decrease in genetic diversity 
C)  an increase in genetic diversity 
D)  a rapid colonization of new niches C

Question 2

Compare the functions of meiosis I and II in the overall generation of gametes.

Accepted Answer

Meiosis I is important in providing opportunities for genetic variability to be introduced. This is accomplished via crossing-over in prophase I and via random assortment in anaphase I. The primary purpose of meiosis II is to create the haploid state after recombination and assortment have created genetic variability.

Question 3

When do homologous chromosomes undergo recombination?

Accepted Answer

A)  during anaphase 
B)  during prophase 
C)  during telophase 
D)  during metaphase 
A)  during anaphase 
B)  during prophase 
C)  during telophase 
D)  during metaphase B

Question 4

Which term refers to media that contain water, organic carbon sources, and salts, but no extra nutritional components?

Accepted Answer

A)  nutritious media 
B)  complete media 
C)  minimal media 
D)  agar media 
A)  nutritious media 
B)  complete media 
C)  minimal media 
D)  agar media

Question 5

During bacterial conjugation, bacterial DNA with different alleles get together. What is the name of the long tubular structure that bacteria use to obtain differing alleles?

Accepted Answer

A)  the flagellum 
B)  the metabolic pilus 
C)  the sex pilus 
D)  the asexual pilus 
A)  the flagellum 
B)  the metabolic pilus 
C)  the sex pilus 
D)  the asexual pilus

Question 6

When researchers cultured a heterogeneous mixture of bacterial strains on a master plate containing complete medium and transferred them onto a replica plate containing minimal medium, what was the result?

Accepted Answer

A)  Some bacterial strains were missing. 
B)  All bacterial strains were present. 
C)  New bacterial strains grew. 
D)  All bacterial strains were dead. 
A)  Some bacterial strains were missing. 
B)  All bacterial strains were present. 
C)  New bacterial strains grew. 
D)  All bacterial strains were dead.

Question 7

Match the events listed below to the following processes. A process may be used once, more than once, or not at all.
-Homologous chromosomes undergo recombination.

Accepted Answer

A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II 
A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II

Question 8

Explain the purpose of meiosis.

Accepted Answer

Meiosis is a process that reduces the ch

Question 9

During synapsis, recombination occurs and chromosomal segments are exchanged.

Accepted Answer

A) True 
 B)False

Question 10

Suppose that a researcher is looking for met- strains of E. coli. She compares two plates. One plate has colonies growing on complete media. The other plate has colonies growing on methionine-deficient media. How can the researcher determine which colonies are met-?

Accepted Answer

A)  by replica plating the plate with minimal media onto one with complete media 
B)  by streaking all individual colonies on minimal media 
C)  by replica plating the plate with complete media onto one with minimal media 
D)  by growing the bacteria in broth media that is complete 
A)  by replica plating the plate with minimal media onto one with complete media 
B)  by streaking all individual colonies on minimal media 
C)  by replica plating the plate with complete media onto one with minimal media 
D)  by growing the bacteria in broth media that is complete

Question 11

Match the events listed below to the following processes. A process may be used once, more than once, or not at all.
-In some species, the nuclear envelope may reform during this stage.

Accepted Answer

A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II 
A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II

Question 12

Spore is another name for gamete.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following types of genetic material undergo recombination during meiosis?

Accepted Answer

A)  sister chromatids 
B)  sister chromatids and homologous chromosomes 
C)  all four chromatids 
D)  homologous chromatids 
A)  sister chromatids 
B)  sister chromatids and homologous chromosomes 
C)  all four chromatids 
D)  homologous chromatids

Question 14

How can bacterial cells that cannot readily pick up DNA molecules from their surroundings be forced to do so?

Accepted Answer

A)  by double crossing-over 
B)  by crossing-over 
C)  by artificial transformation 
D)  by constriction 
A)  by double crossing-over 
B)  by crossing-over 
C)  by artificial transformation 
D)  by constriction

Question 15

Match each term with its correct definition.
-haploid

Accepted Answer

A) cell division that is modified to generate haploid cells 
B) haploid products of meiosis 
C) matching of homologous pairs of chromosomes during prophase I 
D) term used to describe cells having two sets of chromosomes 
E) diploid body cells that do not undergo meiosis
F)term used to describe cells having a single set of chromosomes
G)life strategy that involves fusion of haploid gametes from two source organisms to form a diploid cell
H)another name for crossover sites
I)variant of a particular gene having a slightly different DNA sequence than another variant of the same gene
J)diploid product of gamete fusion
K)process of gamete fusion 
A) cell division that is modified to generate haploid cells 
B) haploid products of meiosis 
C) matching of homologous pairs of chromosomes during prophase I 
D) term used to describe cells having two sets of chromosomes 
E) diploid body cells that do not undergo meiosis
F)term used to describe cells having a single set of chromosomes
G)life strategy that involves fusion of haploid gametes from two source organisms to form a diploid cell
H)another name for crossover sites
I)variant of a particular gene having a slightly different DNA sequence than another variant of the same gene
J)diploid product of gamete fusion
K)process of gamete fusion

Question 16

Who discovered transformation?

Accepted Answer

A)  Gregor Mendel 
B)  Fred Griffith 
C)  Elie L. Wollman 
D)  Joshua Lederberg 
A)  Gregor Mendel 
B)  Fred Griffith 
C)  Elie L. Wollman 
D)  Joshua Lederberg

Question 17

"Bio" refers to a gene that governs a cell's ability to synthesize biotin from inorganic precursors. What does the designation "bio+" indicate?

Accepted Answer

A)  that the bacterium is biologically inactive 
B)  that the allele is the mutant allele 
C)  that the bacterium is biologically active 
D)  that the allele is normal (i.e., wild type) 
A)  that the bacterium is biologically inactive 
B)  that the allele is the mutant allele 
C)  that the bacterium is biologically active 
D)  that the allele is normal (i.e., wild type)

Question 18

Which phrase describes how identical twins can result?

Accepted Answer

A)  from the fusion of two paternal gametes with a single maternal gamete that then divides 
B)  from a lack of chromosomal separation during meiosis, resulting in gametes that are diploid and do not need to be fertilized 
C)  from the fusion of two sets of identical gametes 
D)  from a division of a zygote into two separate cells that develop into two separate embryos 
A)  from the fusion of two paternal gametes with a single maternal gamete that then divides 
B)  from a lack of chromosomal separation during meiosis, resulting in gametes that are diploid and do not need to be fertilized 
C)  from the fusion of two sets of identical gametes 
D)  from a division of a zygote into two separate cells that develop into two separate embryos

Question 19

Match the events listed below to the following processes. A process may be used once, more than once, or not at all.
-Tetrads align at the metaphase plate.

Accepted Answer

A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II 
A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II

Question 20

Match the events listed below to the following processes. A process may be used once, more than once, or not at all.
-Nuclear envelope reforms in all species.

Accepted Answer

A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II 
A) prophase I 
B) prometaphase I 
C) metaphase I 
D) anaphase I 
E) telophase I
F)prophase II
G)prometaphase II
H)metaphase II
I)anaphase II
J)telophase II

Exam 8: Genetic Recombination

Which of the following outcomes is more likely to occur in an organism undergoing sexual reproduction than in an organism undergoing asexual reproduction?

Compare the functions of meiosis I and II in the overall generation of gametes.

When do homologous chromosomes undergo recombination?

Which term refers to media that contain water, organic carbon sources, and salts, but no extra nutritional components?

During bacterial conjugation, bacterial DNA with different alleles get together. What is the name of the long tubular structure that bacteria use to obtain differing alleles?

When researchers cultured a heterogeneous mixture of bacterial strains on a master plate containing complete medium and transferred them onto a replica plate containing minimal medium, what was the result?

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -Homologous chromosomes undergo recombination.

Explain the purpose of meiosis.

During synapsis, recombination occurs and chromosomal segments are exchanged.

Suppose that a researcher is looking for met- strains of E. coli. She compares two plates. One plate has colonies growing on complete media. The other plate has colonies growing on methionine-deficient media. How can the researcher determine which colonies are met-?

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -In some species, the nuclear envelope may reform during this stage.

Spore is another name for gamete.

Which of the following types of genetic material undergo recombination during meiosis?

How can bacterial cells that cannot readily pick up DNA molecules from their surroundings be forced to do so?

Match each term with its correct definition. -haploid

Who discovered transformation?

"Bio" refers to a gene that governs a cell's ability to synthesize biotin from inorganic precursors. What does the designation "bio+" indicate?

Which phrase describes how identical twins can result?

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -Tetrads align at the metaphase plate.

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -Nuclear envelope reforms in all species.

Light and Life

The Cell: an Overview

Energy and Enzymes

Cell Membranes and Signaling

Cellular Respiration

Photosynthesis

Cell Cycles

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Regulation of Gene Expression

Dna Technologies

Genomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

Plants

Animals

Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Animal Nutrition

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

Filters

Suppose that a researcher is looking for met^- strains of E. coli. She compares two plates. One plate has colonies growing on complete media. The other plate has colonies growing on methionine-deficient media. How can the researcher determine which colonies are met^-?

"Bio" refers to a gene that governs a cell's ability to synthesize biotin from inorganic precursors. What does the designation "bio⁺" indicate?