A) Indicate the order of the point mutations in the rII region.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Shown below are the maps of a series of rII deletion strains (1–5). The deleted region is indicated as (......) and the intact region as ______.

 

 1 ___________(...........)_______________

 

 2 _________________(...........)_________

 

 3 (.....................)_____________________

 

 4 ________________________(................)

 

 5 _____(..........)______________________

 

 rII phage strains A-E have point mutations in the rII region. E.coli K(λ) cells are coinfected with one phage that has a deletion and one phage that has a point mutation. The presence of wild-type progeny phage is assessed by the presence (+) or absence (o) of plaques.

 

 

 

1

2

3

4

5

A

+

o

+

+

+

B

o

+

+

+

+

C

+

+

+

o

+

D

+

+

o

+

+

E

+

+

o

+

o

 

 

 

 

 

A) Indicate the order of the point mutations in the rII region.

  1. A) CADBE 
  2. B) DEBAC
  3. C) BADCE
  4. D) ABDEC
  5. E) CEADB

B)  The test described here is a recombination test. Explain Why? 

 

  ⊚        true

  ⊚        false

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