TLS Online TPP Program

#Question id: 3870


“Footprinting” or DNase protection is a technique used to identify:

#SCPH06 I Botany
  1. a region of DNA that has been damaged by mutation.

  2. E. coli cells that contain a desired, cloned piece of DNA.

  3. the position of a particular gene of a chromosome.

  4. the specific binding site of a repressor, polymerase, or other protein on the DNA.

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TLS Online TPP Program

#Question id: 15636

#I Life Science/ Life Sciences Group – I-V

While analysing motif sequences, what is the major disadvantageous feature of PROSITE?

TLS Online TPP Program

#Question id: 15636

#SCPH05 I Biotechnology

While analysing motif sequences, what is the major disadvantageous feature of PROSITE?

TLS Online TPP Program

#Question id: 15636

#SCPH05 I Biotechnology

While analysing motif sequences, what is the major disadvantageous feature of PROSITE?

TLS Online TPP Program

#Question id: 15637

#SCPH01 Biochemistry

You have isolated two mutations in the Lac operon that cause constitutive expression of Lac genes. You designate these mutants Lac1– and Lac2–. Making use of an F' that carries the Lac operon with the LacY gene mutated, you construct strains that you test for both ß-galactosidase activity and Lac permease activity with results shown below.
     
Classify each mutation as dominant or recessive and as cis- or trans-acting, giving the experimental result that allows you to arrive at each conclusion. Finally, deduce what type of Lac mutation best fits the properties of Lac 1– and of Lac 2–.

TLS Online TPP Program

#Question id: 15637

#SCPH06 I Botany

You have isolated two mutations in the Lac operon that cause constitutive expression of Lac genes. You designate these mutants Lac1– and Lac2–. Making use of an F' that carries the Lac operon with the LacY gene mutated, you construct strains that you test for both ß-galactosidase activity and Lac permease activity with results shown below.
     
Classify each mutation as dominant or recessive and as cis- or trans-acting, giving the experimental result that allows you to arrive at each conclusion. Finally, deduce what type of Lac mutation best fits the properties of Lac 1– and of Lac 2–.

TLS Online TPP Program

#Question id: 15637

#SCPH28 | Zoology

You have isolated two mutations in the Lac operon that cause constitutive expression of Lac genes. You designate these mutants Lac1– and Lac2–. Making use of an F' that carries the Lac operon with the LacY gene mutated, you construct strains that you test for both ß-galactosidase activity and Lac permease activity with results shown below.
     
Classify each mutation as dominant or recessive and as cis- or trans-acting, giving the experimental result that allows you to arrive at each conclusion. Finally, deduce what type of Lac mutation best fits the properties of Lac 1– and of Lac 2–.