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TLS Online TPP Program

#Question id: 5281

In the mating Hfr Strs met+ his+ leu+ trp+ Ala+   X F- Strres met- his- leu- trp- Ala-. At regular interval time, the mating cells are interrupted and the cell suspensions plated on four different growth media with streptomycin. The amino acids in the growth media and the number of colonies observed on each are as follows:

Interrupted time

Composition of media

Growth

His

Leu

Ala

Trp

Met

2   min

+

-

+

+

+

Yes

10 min

+

-

-

+

+

Yes

12 min

+

-

-

+

-

No

15 min

+

-

-

-

+

Yes

20 min

-

-

-

-

+

Yes

What is the order of transfer of the genes?

#XL - S Microbiology

  1. Leu- Ala- His- Met - Trp 

  2. Leu- Trp- His- Met-Ala       

  3. Ala- Trp- His- Met- Leu   

  4. Leu- Ala- Trp- His- Met 

More Questions
TLS Online TPP Program

#Question id: 10708

#XL - T Zoology

Which of the following statements is a likely explanation for why invasive species take over communities into which they have been introduced?
TLS Online TPP Program

#Question id: 10734

#XL - T Zoology

This term is a measure of the ability of a system to resist change in the face of outside influences.
TLS Online TPP Program

#Question id: 10735

#XL - T Zoology

Which of the following extreme viewpoints of community organization holds that a community comprises a superorganism and is much more than the sum of its individual parts?
TLS Online TPP Program

#Question id: 10736

#XL - T Zoology

Ecotones are:
TLS Online TPP Program

#Question id: 10737

#XL - T Zoology

Which of the following statements is true?
TLS Online TPP Program

#Question id: 10738

#XL - T Zoology

Which of the following terms is inconsistent with the others?