Ch.6 HW ans key - Ch. 6 HW ans key 091509 MCQs: 1) 2) 3) 4)...

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Ch. 6 HW ans key 091509 MCQs: 1) C 2) A 3) A 4) C 5) D 6) E 7) D T/ F: 1) F 2) T 3) F 4) F 5) T 6) F 7) F SQ: 1) Both lysis and lysogeny involve bacterial/phage interactions related to the production of phage progeny. Lysis is where progeny phage burst from the bacterial cell, while lysogeny involves the incorporation of the phage chromosome into the bacterial chromosome. 2) Generalized transduction occurs with lytic phages that enter a bacterial cell, fragment the bacterial chromosome and then package some of the bacterial genome with the viral parts. Therefore, any bacterial gene can be included within the newly formed virus. In contrast, specialized transduction occurs with improper excision of viral DNA from the host chromosome in lysogenic phages. Because the integration site is fixed, only those bacterial genes very close to the viral gene can be transferred. 3) Types of mating outcomes F+ X F- two F+ cells Hfr X F- one Hfr and one F- cell F’ X F- two F’ cells F factor contains a number of genes that take part in the conjugation process, including genes necessary for the synthesis of the sex pilus. The F factor also has
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This note was uploaded on 07/04/2011 for the course BIO 325 taught by Professor Saxena during the Fall '08 term at University of Texas at Austin.

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Ch.6 HW ans key - Ch. 6 HW ans key 091509 MCQs: 1) 2) 3) 4)...

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