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Genetic Regulation Prokaryotes

Genetic Regulation Prokaryotes
What are genes?

A portion of a chromosome
The functional unit of inheritance
All of these
A fragment of DNA

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Genetic Regulation Prokaryotes
In the presence of tryptophan in the cell, the repressor is __________

bound to DNA
bound to neither tryptophan nor DNA
bound to both DNA and tryptophan
bound to tryptophan

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Genetic Regulation Prokaryotes
Enhancers differ from promoters in that

they initiate transcription
they are restricted to a specific gene
they are adjacent to the start codon
their orientation can be inverted without effect

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Genetic Regulation Prokaryotes
Tubulin is regulated by

binding of tubulin to the tubulin translational product
splicing of the tubulin transcript
binding of tubulin to tubulin mRNA
binding of tubulin to DNA

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Genetic Regulation Prokaryotes
Sex lethal (sxl) in Drosophila is transcribed when

the X autosome balance is 1 or greater
the X autosome balance is less than 0.5
None of these
the X autosome balance equals 0.5

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Genetic Regulation Prokaryotes
Which of the following is not part of the lac operon?

none of these
O
I
P

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