what will happen, when repressor bound at OR1 and OR2, -triyambak.org

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TLS Online TPP Program

#Question id: 4682

what will happen, when repressor bound at OR1 and OR2,

#Unit 3. Fundamental Processes

only activates the maintenance mode
only turns off the establishment mode of expression
repressor negatively regulates its own synthesis such that its concentration remains below
activates the maintenance mode, but also turns off the establishment mode of expression

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TLS Online TPP Program

#Question id: 2899

#Unit 2. Cellular Organization

The H3.H4 tetramers and H2A.H2B dimers each interact with a particular region of the DNA within the nucleosome.

I. Histone H3.H4 tetramers occupy a key position in the nucleosome by binding the middle and both ends of the DNA.

II. The amino-terminal region of H3 most proximal to the histone-fold region forms a fourth a-helix that interacts with the final 13 bp at each end of the bound DNA.

III. The relatively short length of DNA bound by H2A.H2B dimers is sufficient to prepare the DNA for H3.H4 tetramer binding.

IV. The H3.H4 tetramer forms the bottom part of the histone octamer located across the disc from the DNA ends whereas two H2A.H2B dimer occupies the top part.

Which of the following represents the correct binding of the histones with the DNA?

TLS Online TPP Program

#Question id: 7052

#Unit 5. Developmental Biology

Which of the following gene involved in maintaining the stem cell property of the P blastomeres in nematodes?

TLS Online TPP Program

#Question id: 18073

#Unit 11. Evolution and Behavior

During which geological period was there an first definite evidence of land plants and algae dominant of many plants?

TLS Online TPP Program

#Question id: 17077

#Unit 12. Applied Biology