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Genetic Regulation Prokaryotes

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

may be positive or negative
none of these
positive
negative

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Genetic Regulation Prokaryotes
A frameshift mutation occurs in the sigma subunit gene transcribed as part of SPOl early genes. What will be the immediate result?

Infection will proceed as usual
The bacterial host will lyse immediately
Early genes will not be translated
Middle genes will not be transcribed

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

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

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Genetic Regulation Prokaryotes
The lac operon is translated into __________ proteins.

3
2
1
4

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Genetic Regulation Prokaryotes
DNA is methylated at

AC sequences
CG sequences
TATA sequences
CAAT sequences

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Genetic Regulation Prokaryotes
Alternate splicing of RNA transcripts is a mechanism to regulate

tubulin
tachykinins
DNA methylation
leucine zippers

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