Mutations
a. can be beneficial.
b. can be harmful.
c. can be neutral.
d. can be beneficial, harmful or neutral.
e. can evolve within an individual.
D
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The extinction of dinosaurs was probably due to the breakup of Pangaea and the resulting cooling of
the world's climate.
Indicate whether the statement is true or false.Where will RNA polymerase bind to a prokaryotic operon to initiate transcription if a repressor is absent?
a. transcriptional start site b. promoter c. operator d. coding region
The role of CAP in the lac operon is:
a. repression of RNA polymerase binding to the promoter. b. negative control of the lac operon. c. enhancement of RNA polymerase binding to the promoter. d. to inactivate the repressor by binding to its allosteric site. e. the activation of allolactose binding to the repressor protein
Exchange of segments between nonsister chromatids of a bivalent during meiosis.
What will be an ideal response?