The lac operator overlaps the promoter, and so the repressor bound to the operator physically prevents RNA polymerase from binding to the promoter and thus initiating RNA synthesis.

TLS Online TPP Program

#Id: 1860

#Unit 3. Fundamental Processes

Sp1 contains three zinc fingers, 25% of their amino acid residues are Gln.

TLS Online TPP Program

#Id: 3124

#Unit 3. Fundamental Processes

There is a 13-minute delay before the GATC/CTAG repeats are remethylated. 

TLS Online TPP Program

#Id: 7813

#Unit 10. Ecological Principles

Heat exchange                       

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#Id: 9792

#Unit 6. System Physiology – Plant

Effect of light is Photomorphogenesis

 A decrease in the rate of stem elongation

The beginning of apical-hook straightening

The initiation of the synthesis of pigments

TLS Online TPP Program

#Id: 10169

#Unit 6. System Physiology – Plant

KNOXI gene and GA2 oxidase are primary regulators of GA