Essential Genetics: A Genomics Perspective, Fourth Edition: Practice Quizzes

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Title Text: Essential Genetics: A Genomics Perspective, Fourth Edition, Daniel L. Hartl and Elizabeth W. Jones

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor.

1: Circular DNA molecules, which replicate independently of the chromosome are called
	A: Plaques
	B: Plasmids
	C: Prophages
	D: Lysogens
	E: Ti plasmids

2: The process by which a bacterial DNA fragment is transferred from one bacterial cell to another by a phage particle is known as
	A: Intergation
	B: Conjugation
	C: Transformation
	D: Transduction
	E: Contamination

3: A DNA element that encodes a site-specific recombinase as well as a recognition region that allows other sequences with similar recognition regions to be incorporated by recombination is called
	A: Integron
	B: Phage
	C: Transposable element
	D: Prophage
	E: Lysogen

4: A mutant microorganism unable to synthesize an essential compound but able to grow if that compound is supplied exogenously is called a
	A: Virulent strain
	B: Cistron
	C: Partial diploid
	D: Prototroph
	E: Auxotroph

5: In a mating between Hfr and F- cells, the Hfr donor
	A: Becomes F›
	B: Becomes F+
	C: Becomes F-
	D: Loses part of the chromosome
	E: Remains Hfr

6: Phage DNA integrated into the chromosome is called a(n)
	A: Prophage
	B: Lytic phage
	C: Lysogen
	D: Exconjugant
	E: F factor

7: In E. coli, the plasmid that can mobilize the chromosome for transfer to another cell in the process of conjugation is called
	A: F factor
	B: Cointegrate
	C: Cotransformant
	D: Transposable element
	E: Vector

8: The transferred marker that is selected by the growth conditions is called a
	A: Selection differential
	B: Counterselected
	C: Selected
	D: Integron
	E: Cassette

9: How long does it take under usual conditions for an entire bacterial chromosome to be transferred during conjugation?
	A: 5 min
	B: 20 min
	C: 40 min
	D: 100 min
	E: 120 min

10: E. coli cell that contains F factor integrated into bacterial chromosome is called a(n)
	A: Merodiploid
	B: Exconjugant
	C: Hfr
	D: F'
	E: Cointegrate

Optional: Enter your name and your instructor's E-mail address to have your results E-mailed to him or her.
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