Which of the following is a characteristic of the set of genes in an operon that is not true of a regulon?
A. Transcription can produce long polycistronic mRNA that contains multiple genes in each transcript.
B. Each gene of the set usually contains its own Shine-Dalgarno sequence.
C. Regulation of gene expression can occur through activation or repression mechanisms.
D. All of the genes in the set are controlled by a single promoter.
D
You might also like to view...
Describe the evidence that supports that protists have evolved into multiple evolutionary lineages.
What will be an ideal response?
Over tropical rainforest areas, approximately 90% of the water that reaches the atmosphere comes from
A. plant absorption. B. animal metabolism. C. plant transpiration. D. plant metabolism. E. animal perspiration.
In the reaction glucose + fructose ----> sucrose + water, _______ is a reactant and _______ is a product.
A. sucrose ... fructose B. glucose ... water C. glucose ...fructose D. sucrose ... water
A tetraploid plant species (with four identical sets of chromosomes) is probably the result of _________.
a. allopolyploidy b. hybridization and nondisjunction c. allopatric speciation d. autopolyploidy as well as hybridization and nondisjunction e. autopolyploidy