Question 1

What do bacterial cells do in transduction?

Accepted Answer

A)  They take up pieces of DNA through the use of a virus. 
B)  They replicate DNA molecules. 
C)  They make replicate copies of one another. 
D)  They take up pieces of DNA that are released as other cells disintegrate. 
A)  They take up pieces of DNA through the use of a virus. 
B)  They replicate DNA molecules. 
C)  They make replicate copies of one another. 
D)  They take up pieces of DNA that are released as other cells disintegrate.

Question 2

Identify each numbered part of the following illustration.  
-centriole

Accepted Answer

The answer of Identify each numbered part of the following...

Question 3

Which of the following is among the results of nondisjunction?

Accepted Answer

A)  a change in the status of a daughter cell from diploid to haploid 
B)  a failure of spindle fibres to separate a homologous pair of chromosomes 
C)  one pole receiving neither member of a homologous pair of chromosomes 
D)  a change in the status of a daughter cell from haploid to diploid 
A)  a change in the status of a daughter cell from diploid to haploid 
B)  a failure of spindle fibres to separate a homologous pair of chromosomes 
C)  one pole receiving neither member of a homologous pair of chromosomes 
D)  a change in the status of a daughter cell from haploid to diploid

Question 4

Which pattern of diploid and haploid phases reflects the life cycle of plants?

Accepted Answer

A)  alternation between haploid and diploid generations 
B)  one haploid generation followed by two diploid generations 
C)  two haploid generations followed by a diploid generation 
D)  a single generation that limits the haploid state to gametes, while the rest of the organism is diploid 
A)  alternation between haploid and diploid generations 
B)  one haploid generation followed by two diploid generations 
C)  two haploid generations followed by a diploid generation 
D)  a single generation that limits the haploid state to gametes, while the rest of the organism is diploid

Question 5

What is the name of the small circles of DNA that occur in bacteria in addition to the main circular chromosomal DNA molecule?

Accepted Answer

A)  transformants 
B)  plastids 
C)  plasmids 
D)  domains 
A)  transformants 
B)  plastids 
C)  plasmids 
D)  domains

Question 6

In what way is the process of fertilization random?

Accepted Answer

A)  in the type of gamete fertilized 
B)  in the selection of which gametes fuse 
C)  in the recombination of chromosomes 
D)  in the number of chromosomes involved 
A)  in the type of gamete fertilized 
B)  in the selection of which gametes fuse 
C)  in the recombination of chromosomes 
D)  in the number of chromosomes involved

Question 7

Match the events listed below to the following processes. A process may be used once, more than once, or not at all.
-This stage is always characterized by the breakdown of the nuclear envelope.

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

Which sentence best describes what occurs during bacterial transformation?

Accepted Answer

A)  Bacteria take up pieces of DNA through infection of a virus. 
B)  Bacteria replicate DNA molecules. 
C)  Bacteria make replicate copies of one another. 
D)  Bacteria take up pieces of DNA that are released as other cells disintegrate. 
A)  Bacteria take up pieces of DNA through infection of a virus. 
B)  Bacteria replicate DNA molecules. 
C)  Bacteria make replicate copies of one another. 
D)  Bacteria take up pieces of DNA that are released as other cells disintegrate.

Question 9

Match each term with its correct definition.
-zygote

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 10

Which sentence best describes what occurs during bacterial conjugation?

Accepted Answer

A)  Cells exchange their entire genome. 
B)  Cells contact each other using a sex pilus to obtain new alleles. 
C)  Cells contact each other to exchange proteins. 
D)  Cells disrupt each other. 
A)  Cells exchange their entire genome. 
B)  Cells contact each other using a sex pilus to obtain new alleles. 
C)  Cells contact each other to exchange proteins. 
D)  Cells disrupt each other.

Question 11

How many recombination events result from cutting and pasting four DNA backbones?

Accepted Answer

A)  four 
B)  three 
C)  two 
D)  one 
A)  four 
B)  three 
C)  two 
D)  one

Question 12

Suppose that an unknown organism from an alien planet is observed and found to have a diploid state in every other generation and to result from fertilization. The haploid state is able to grow into a gametophyte-like structure. Which life cycle strategies does this alien organism closely mimic?

Accepted Answer

A)  those of all plants and some fungi 
B)  those of fungi and algae 
C)  those of algae and animals 
D)  those of plants and animals 
A)  those of all plants and some fungi 
B)  those of fungi and algae 
C)  those of algae and animals 
D)  those of plants and animals

Question 13

What type of genetic recombination results from the mating of two strains of bacteria F+ and F-?

Accepted Answer

A)  transposition 
B)  plasmid genetic recombination 
C)  conjugation 
D)  histone genetic recombination 
A)  transposition 
B)  plasmid genetic recombination 
C)  conjugation 
D)  histone genetic recombination

Question 14

Which pattern of diploid and haploid phases reflects the life cycle of animals?

Accepted Answer

A)  alternation between haploid and diploid generations 
B)  one haploid generation followed by two diploid generations 
C)  two haploid generations followed by a diploid generation 
D)  a single generation that limits the haploid state to gametes, while the rest of the organism is diploid 
A)  alternation between haploid and diploid generations 
B)  one haploid generation followed by two diploid generations 
C)  two haploid generations followed by a diploid generation 
D)  a single generation that limits the haploid state to gametes, while the rest of the organism is diploid

Question 15

What sort of phage is bacteriophage lambda?

Accepted Answer

A)  a virulent phage 
B)  a plant phage 
C)  an animal phage 
D)  a temperate phage 
A)  a virulent phage 
B)  a plant phage 
C)  an animal phage 
D)  a temperate phage

Question 16

Which of the following best describes the sex chromosomes?

Accepted Answer

A)  They are non-homologous. 
B)  They are completely homologous. 
C)  They are heterozygous. 
D)  They are partially homologous, but also have unique regions. 
A)  They are non-homologous. 
B)  They are completely homologous. 
C)  They are heterozygous. 
D)  They are partially homologous, but also have unique regions.

Question 17

List and briefly explain the four ways in which genetic variability is increased during meiosis.

Accepted Answer

Meiosis increases genetic variability in

Question 18

Which organisms undergo alternation between haploid and diploid generations?

Accepted Answer

A)  all land plants 
B)  all animals 
C)  all bacteria 
D)  all fungi 
A)  all land plants 
B)  all animals 
C)  all bacteria 
D)  all fungi

Question 19

Identify each numbered part of the following illustration.  
-chiasmata

Accepted Answer

The answer of Identify each numbered part of the following...

Question 20

Identify each numbered part of the following illustration.  
-metaphase plate

Accepted Answer

The answer of Identify each numbered part of the following...

Exam 8: Genetic Recombination

What do bacterial cells do in transduction?

Identify each numbered part of the following illustration. -centriole

Which of the following is among the results of nondisjunction?

Which pattern of diploid and haploid phases reflects the life cycle of plants?

What is the name of the small circles of DNA that occur in bacteria in addition to the main circular chromosomal DNA molecule?

In what way is the process of fertilization random?

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -This stage is always characterized by the breakdown of the nuclear envelope.

Which sentence best describes what occurs during bacterial transformation?

Match each term with its correct definition. -zygote

Which sentence best describes what occurs during bacterial conjugation?

How many recombination events result from cutting and pasting four DNA backbones?

Suppose that an unknown organism from an alien planet is observed and found to have a diploid state in every other generation and to result from fertilization. The haploid state is able to grow into a gametophyte-like structure. Which life cycle strategies does this alien organism closely mimic?

What type of genetic recombination results from the mating of two strains of bacteria F+ and F-?

Which pattern of diploid and haploid phases reflects the life cycle of animals?

What sort of phage is bacteriophage lambda?

Which of the following best describes the sex chromosomes?

List and briefly explain the four ways in which genetic variability is increased during meiosis.

Which organisms undergo alternation between haploid and diploid generations?

Identify each numbered part of the following illustration. -chiasmata

Identify each numbered part of the following illustration. -metaphase plate

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

What type of genetic recombination results from the mating of two strains of bacteria F⁺ and F^-?