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Genetic Regulation Prokaryotes

Genetic Regulation Prokaryotes
Catabolite activating protein exerts __________ control on transcription of the lac operon genes.

none of these
positive
may be positive or negative
negative

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Genetic Regulation Prokaryotes
In the presence of high levels of tryptophan

attenuator propogates transcription
None of these
attenuator allows transcription of trp structural genes
attenuator terminates transcription

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

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

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Genetic Regulation Prokaryotes
DNA is methylated at

AC sequences
TATA sequences
CG sequences
CAAT sequences

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Genetic Regulation Prokaryotes
Sex determination in Drosophila involves

gene amplification
alternate splicing
none of these
methylation

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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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