TLS Online TPP Program

#Question id: 3856


In eukaryotes, the conserved element closest to the transcription start site is called the:

#XL - Q Biochemistry
  1. –10 promoter region

  2. –35 promoter region   

  3. the TATA box

  4. the transcription factor

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TLS Online TPP Program

#Question id: 5277

#XL - S Microbiology

Deduce the genotype of bacteria strain was shown either growth presents or not in different media?

Media supplement

Minimal

Minimal + Arginine

Minimal + Methionine

Minimal + Arginine+ Methionine

Growth

No

Yes

     No

Yes

TLS Online TPP Program

#Question id: 5279

#XL - S Microbiology

In a transduction experiment, phage P1 is grown on a bacterial host of genotype A+ B+ C+ and the resulting lysate is used to infect a recipient strain of genotype A– B– C–. The genes are in an order such that B is in the middle, and the distance between A and B is greater than the distance between B and C. Based on this information, which of the following least genotype?

TLS Online TPP Program

#Question id: 5281

#XL - S Microbiology

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?

TLS Online TPP Program

#Question id: 5285

#XL - S Microbiology

A transformation experiment is carried out using donor DNA that is A+B+C+ and a recipient that is A-B- C-. A+ transformants are selected and tested further. Of these, 64% are B+ and none are C+. Also, B+ are selected, and 8% are also C+. What is the gene order

TLS Online TPP Program

#Question id: 5287

#XL - S Microbiology

Interrupted matting of different Hfr strain with F- E.coli cell resulting generation of following strain  Order of gene is

TLS Online TPP Program

#Question id: 5290

#XL - S Microbiology

The following table shows mapping data from three interrupted mating experiments using three different Hfr strains and an F- strain: The order of genes is