A repressor protein would have which of the following effects on repressible genes with a negative control
mechanism?
a. Stimulate transcription in the presence of a corepressor.
b. Turn off transcription in the presence of an inducer.
c. Stimulate transcription in the presence of a coactivator.
d. Turn off transcription in the presence of a corepressor.
e. A repressor protein does not participate in negative control mechanisms.
d
You might also like to view...
A section along the midsagittal plane results in ________ portions of the object
a. anterior and posterior b. dorsal and ventral c. left and right mirror image d. superior and inferior
The stomata open depending on the following conditions, except ____.
A. when the guard cells are swollen with water B. decreased turgor in guard cells C. low carbon dioxide level in the leaf D. voltage change in guard cell membranes stimulated by sunlight E. hot, dry environment
What is the purpose of safranin in the Gram stain technique?
a. It is a counterstain, which will make gram-positive bacteria colorless. b. It is a decolorizing agent. c. It is the primary stain used to impart a pink color to all cells in a heat-fixed smear. d. It is a counterstain, which turns gram-negative bacteria pink.
In the analysis of quantitative traits, positions on chromosomes called quantitative trait loci (QTLs) are often discussed. In the same context, restriction fragment length polymorphisms (RFLPs) are also discussed. What is the relationship between QTLs
and RFLPs? What will be an ideal response?