Question 1

Even if chromosomes are not a perfect match, pairing centres sometimes allow synapsis.

Accepted Answer

A) True 
 B)False  True

Question 2

What is identified through the technique of replica plating?

Accepted Answer

A) auxotrophic bacteria 
B) a heterozygote 
C) prototropic bacteria 
D) phototropic bacteria 
A) auxotrophic bacteria 
B) a heterozygote 
C) prototropic bacteria 
D) phototropic bacteria A

Question 3

Match each term with its correct definition.
-transposase

Accepted Answer

A) movement of bacterial DNA from one cell to another inside a bacteriophage 
B) a virus 
C) particular segments of DNA that move from one place to another 
D) simplest TEs 
E) enzyme that catalyzes reactions to insert or remove TEs
F)DNA that has an inverted repeat sequence at each end
G)enzyme that uses an RNA template to make a DNA copy of the retrotransposon
H)transferring DNA using a virus 
A) movement of bacterial DNA from one cell to another inside a bacteriophage 
B) a virus 
C) particular segments of DNA that move from one place to another 
D) simplest TEs 
E) enzyme that catalyzes reactions to insert or remove TEs
F)DNA that has an inverted repeat sequence at each end
G)enzyme that uses an RNA template to make a DNA copy of the retrotransposon
H)transferring DNA using a virus E

Question 4

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 cross-over 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 cross-over 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 5

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

Accepted Answer

Meiosis I is important in providing oppo

Question 6

Match each term with its correct definition.
-generalized transduction

Accepted Answer

A) movement of bacterial DNA from one cell to another inside a bacteriophage 
B) a virus 
C) particular segments of DNA that move from one place to another 
D) simplest TEs 
E) enzyme that catalyzes reactions to insert or remove TEs
F)DNA that has an inverted repeat sequence at each end
G)enzyme that uses an RNA template to make a DNA copy of the retrotransposon
H)transferring DNA using a virus 
A) movement of bacterial DNA from one cell to another inside a bacteriophage 
B) a virus 
C) particular segments of DNA that move from one place to another 
D) simplest TEs 
E) enzyme that catalyzes reactions to insert or remove TEs
F)DNA that has an inverted repeat sequence at each end
G)enzyme that uses an RNA template to make a DNA copy of the retrotransposon
H)transferring DNA using a virus

Question 7

Suppose that a researcher exposes a noninfective form of the bacterium Streptococcus pneumoniae to heat-killed cells of an infective strain. Which process of genetic exchange is most likely to occur between the strains?

Accepted Answer

A) conjugation 
B) re-infection 
C) transduction 
D) transformation 
A) conjugation 
B) re-infection 
C) transduction 
D) transformation

Question 8

"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 9

Suppose that an unknown organism from an alien planet is observed and found to have a diploid state only following fertilization. Meiosis follows and the majority of this organism's life is spent in a haploid state. Which multicellular organisms on Earth most closely resemble this type of life cycle strategy?

Accepted Answer

A) ferns 
B) maple trees 
C) humpback whales 
D) some algae 
A) ferns 
B) maple trees 
C) humpback whales 
D) some algae

Question 10

What term refers to the series of events that begins with an infection of one cell and ends with the release of progeny phages from broken or open cells?

Accepted Answer

A) the lysogenic cycle 
B) the lytic cycle 
C) the citric acid cycle 
D) the Krebs cycle 
A) the lysogenic cycle 
B) the lytic cycle 
C) the citric acid cycle 
D) the Krebs cycle

Question 11

Match each term with its correct definition.
-allele

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 cross-over 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 cross-over 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 12

Match each term with its correct definition.
-gametes

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 cross-over 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 cross-over 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 13

Bacterial transposons often carry genes for which feature?

Accepted Answer

A) formation of flagella 
B) formation of antibiotic resistance 
C) formation of the sex pilus 
D) formation of a capsule 
A) formation of flagella 
B) formation of antibiotic resistance 
C) formation of the sex pilus 
D) formation of a capsule

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 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 16

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

Question 17

Identify each numbered part of the following illustration.    
-tetrad

Accepted Answer

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

Question 18

Match each term with its correct definition.
-reverse transcriptase

Accepted Answer

A) movement of bacterial DNA from one cell to another inside a bacteriophage 
B) a virus 
C) particular segments of DNA that move from one place to another 
D) simplest TEs 
E) enzyme that catalyzes reactions to insert or remove TEs
F)DNA that has an inverted repeat sequence at each end
G)enzyme that uses an RNA template to make a DNA copy of the retrotransposon
H)transferring DNA using a virus 
A) movement of bacterial DNA from one cell to another inside a bacteriophage 
B) a virus 
C) particular segments of DNA that move from one place to another 
D) simplest TEs 
E) enzyme that catalyzes reactions to insert or remove TEs
F)DNA that has an inverted repeat sequence at each end
G)enzyme that uses an RNA template to make a DNA copy of the retrotransposon
H)transferring DNA using a virus

Question 19

Prokaryotic cells can undergo meiosis.

Accepted Answer

A) True 
 B)False

Question 20

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.

Exam 9: Genetic Recombination

Even if chromosomes are not a perfect match, pairing centres sometimes allow synapsis.

What is identified through the technique of replica plating?

Match each term with its correct definition. -transposase

Match each term with its correct definition. -zygote

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

Match each term with its correct definition. -generalized transduction

Suppose that a researcher exposes a noninfective form of the bacterium Streptococcus pneumoniae to heat-killed cells of an infective strain. Which process of genetic exchange is most likely to occur between the strains?

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

What term refers to the series of events that begins with an infection of one cell and ends with the release of progeny phages from broken or open cells?

Match each term with its correct definition. -allele

Match each term with its correct definition. -gametes

Bacterial transposons often carry genes for which feature?

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

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.

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

Identify each numbered part of the following illustration. -tetrad

Match each term with its correct definition. -reverse transcriptase

Prokaryotic cells can undergo meiosis.

Which sentence best describes what occurs during bacterial transformation?

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