Question 1

Match the events listed below to the following processes. A process may be used once, more than once, or not at all.
-Spindles are disassembled and replaced by new spindles.

Accepted Answer

A)  prophase I
B)  prometaphase I
C)  metaphase I
D)  anaphase I
E)  telophase IF) prophase IIG) prometaphase IIH) metaphase III) anaphase IIJ) telophase IIK) G) and H)
L) A) and G)

Question 2

During conjugation, which cells are the recipients of the exogenous DNA?

Accepted Answer

A)   F- cells
B)   F2 cells
C)   F1 cells
D)   F+ cellsE) A) and B)
F) A) and C)

Question 3

Which phrase best describes sister chromatids?

Accepted Answer

A)   two chromosomes having the same alleles of the same genes in a different order
B)   two chromosomes having different alleles of the same genes arranged in a different order
C)   two chromosomes having an identical DNA sequence
D)   two chromosomes having the same genes in the same order, but having different allelesE) None of the above
F) A) and C)

Question 4

Haploid cells have homologous chromosomes.

Accepted Answer

A) True 
 B)False

Question 5

"Thr" refers to a gene that governs a cell's ability to synthesize threonine from inorganic precursors. What does the designation "thr+" indicate?

Accepted Answer

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

Question 6

Which term refers to a virus in the lysogenic cycle that is fully integrated into the host genome?

Accepted Answer

A)   virulent phage
B)   infectious phage
C)   tempered phage
D)   prophageE) A) and D)
F) All of the above

Question 7

Which type of DNA is transferred as a result of conjugation involving an Hfr strain of E. coli?

Accepted Answer

A)   the F factor
B)   chromosomal genes
C)   eukaryotic DNA
D)   the sex pilusE) B) and C)
F) A) and D)

Question 8

Describe the two stages in meiosis where the most genetic recombination occurs.

Accepted Answer

The two stages of meiosis that are the m...

Question 9

Which of the following is an advantage of sexual reproduction over asexual reproduction?

Accepted Answer

A)   Sexual reproduction mixes genetic information into a new combination in the next generation.
B)   Sexual reproduction ensures a greater number of progeny.
C)   Sexual reproduction keeps the number of chromosomes constant more effectively.
D)   Sexual reproduction requires an interaction between two individuals.E) B) and C)
F) C) and D)

Question 10

By which molecular process do non-infective strains of bacteria acquire genes from infectious strains?

Accepted Answer

A)   by nuclear division
B)   by metaphase II
C)   by double crossovers
D)   by meiosisE) A) and C)
F) None of the above

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 meiosisF) term used to describe cells having a single set of chromosomesG) life strategy that involves fusion of haploid gametes from two source organisms to form a diploid cellH) another name for crossover sitesI) variant of a particular gene having a slightly different DNA sequence than another variant of the same geneJ) diploid product of gamete fusionK) process of gamete fusionL) C) and K)
M) H) and K)

Question 12

In terms of meiosis, what is the essential difference between the life cycle of animals and the life cycle of plants?

Accepted Answer

A)   Plants alternate between haploid and diploid generations.
B)   Animals do not have a haploid phase.
C)   Animals have a dominant haploid phase.
D)   Plants alternate between diploid and polyploid generations.E) A) and D)
F) None of the above

Question 13

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 meiosisF) term used to describe cells having a single set of chromosomesG) life strategy that involves fusion of haploid gametes from two source organisms to form a diploid cellH) another name for crossover sitesI) variant of a particular gene having a slightly different DNA sequence than another variant of the same geneJ) diploid product of gamete fusionK) process of gamete fusionL) B) and F)
M) C) and J)

Question 14

For some virulent phages, fragments of the host DNA may be included in the heads as the viral particles assemble, thus providing the basis for transduction of bacterial genes during the next cycle of infection. What is the name of this mechanism?

Accepted Answer

A)   generalized transduction
B)   transformation
C)   transmutation
D)   specific transductionE) B) and D)
F) B) and C)

Question 15

Suppose that a researcher exposes a non-infective 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)   transformationE) A) and B)
F) A) and C)

Question 16

Which of the following always results from recombination at the synaptonemal complex?

Accepted Answer

A)   a random number of changed chromatids versus unchanged chromatids
B)   four unchanged chromatids
C)   two changed chromatids and two unchanged chromatids
D)   four changed chromatidsE) A) and B)
F) C) and D)

Question 17

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 algaeE) A) and D)
F) A) and C)

Question 18

Which stage of meiosis is characterized by DNA condensation into compact chromosomes?

Accepted Answer

A)   prophase I
B)   prophase II
C)   prometaphase I
D)   anaphase IE) A) and D)
F) A) and C)

Question 19

What is the purpose of the sex pilus?

Accepted Answer

A)   to form a gap junction and conjugate
B)   to allow transfer of gametes
C)   to facilitate DNA exchange
D)   to stabilize a network of bacterial cellsE) B) and D)
F) A) and B)

Question 20

What is identified through the technique of replica plating?

Accepted Answer

A)   auxotrophic bacteria
B)   a heterozygote
C)   prototrophic bacteria
D)   phototropic bacteriaE) A) and B)
F) A) and D)

Exam 8: Genetic Recombination

Correct Answer
verified

Match each term with its correct definition. -gametes

Correct Answer
verified

Which type of DNA is transferred as a result of conjugation involving an Hfr strain of E. coli?

Correct Answer
verified

Suppose that a researcher exposes a non-infective 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?

Correct Answer
verified

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -Spindles are disassembled and replaced by new spindles.

Correct Answer
verified

In terms of meiosis, what is the essential difference between the life cycle of animals and the life cycle of plants?

Correct Answer
verified

Describe the two stages in meiosis where the most genetic recombination occurs.

Correct Answer
verified
The two stages of meiosis that are the m...
View Answer

Haploid cells have homologous chromosomes.

Correct Answer
verified

What is the purpose of the sex pilus?

Correct Answer
verified

What is identified through the technique of replica plating?

Correct Answer
verified

Which term refers to a virus in the lysogenic cycle that is fully integrated into the host genome?

Correct Answer
verified

For some virulent phages, fragments of the host DNA may be included in the heads as the viral particles assemble, thus providing the basis for transduction of bacterial genes during the next cycle of infection. What is the name of this mechanism?

Correct Answer
verified

Which of the following is an advantage of sexual reproduction over asexual reproduction?

Correct Answer
verified

During conjugation, which cells are the recipients of the exogenous DNA?

Correct Answer
verified

"Thr" refers to a gene that governs a cell's ability to synthesize threonine from inorganic precursors. What does the designation "thr⁺" indicate?

Correct Answer
verified

Which stage of meiosis is characterized by DNA condensation into compact chromosomes?

Correct Answer
verified

Which of the following always results from recombination at the synaptonemal complex?

Correct Answer
verified

Match each term with its correct definition. -allele

Correct Answer
verified

Which phrase best describes sister chromatids?

Correct Answer
verified

By which molecular process do non-infective strains of bacteria acquire genes from infectious strains?

Correct Answer
verified

Exam 8: Genetic Recombination

Correct AnswerverifiedShow Answer

Match each term with its correct definition. -gametes

Correct AnswerverifiedShow Answer

Which type of DNA is transferred as a result of conjugation involving an Hfr strain of E. coli?

Correct AnswerverifiedShow Answer

Suppose that a researcher exposes a non-infective 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?

Correct AnswerverifiedShow Answer

Match the events listed below to the following processes. A process may be used once, more than once, or not at all. -Spindles are disassembled and replaced by new spindles.

Correct AnswerverifiedShow Answer

In terms of meiosis, what is the essential difference between the life cycle of animals and the life cycle of plants?

Correct AnswerverifiedShow Answer

Describe the two stages in meiosis where the most genetic recombination occurs.

Correct AnswerverifiedThe two stages of meiosis that are the m...View AnswerShow Answer

Haploid cells have homologous chromosomes.

Correct AnswerverifiedShow Answer

What is the purpose of the sex pilus?

Correct AnswerverifiedShow Answer

What is identified through the technique of replica plating?

Correct AnswerverifiedShow Answer

Which term refers to a virus in the lysogenic cycle that is fully integrated into the host genome?

Correct AnswerverifiedShow Answer

For some virulent phages, fragments of the host DNA may be included in the heads as the viral particles assemble, thus providing the basis for transduction of bacterial genes during the next cycle of infection. What is the name of this mechanism?

Correct AnswerverifiedShow Answer

Which of the following is an advantage of sexual reproduction over asexual reproduction?

Correct AnswerverifiedShow Answer

During conjugation, which cells are the recipients of the exogenous DNA?

Correct AnswerverifiedShow Answer

"Thr" refers to a gene that governs a cell's ability to synthesize threonine from inorganic precursors. What does the designation "thr+" indicate?

Correct AnswerverifiedShow Answer

Which stage of meiosis is characterized by DNA condensation into compact chromosomes?

Correct AnswerverifiedShow Answer

Which of the following always results from recombination at the synaptonemal complex?

Correct AnswerverifiedShow Answer

Match each term with its correct definition. -allele

Correct AnswerverifiedShow Answer

Which phrase best describes sister chromatids?

Correct AnswerverifiedShow Answer

By which molecular process do non-infective strains of bacteria acquire genes from infectious strains?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified
The two stages of meiosis that are the m...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

"Thr" refers to a gene that governs a cell's ability to synthesize threonine from inorganic precursors. What does the designation "thr⁺" indicate?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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