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Both prokaryotic and eukaryotic cells use which of the following to turn certain genes on or off?
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rlemus87
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DNA ligase  
   RNA transcriptase  
   intron segments  
   regulatory proteins  
   nucleosome packing

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Both prokaryotic and eukaryotic cells use which of the following to turn certain genes on or off?
Nov 2, 2012

Regulatory proteins.

Regulatory proteins are the proteins that control gene expression. The others are not.

DNA ligase stitches together broken DNA strands; RNA transcriptase is another word for RNA polymerase- it makes RNA from DNA. Intron segments are simply segments of DNA that do not code for proteins... and finally, nucleosome packing is the packaging of DNA into chromosomes.



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Both prokaryotic and eukaryotic cells use which of the following to turn certain genes on or off?
Nov 2, 2012

regulatory proteins;  ligaseis used to connect nucleotides, transcriptase is used to go from rna to dna, prokaryotes lack introns



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Both prokaryotic and eukaryotic cells use which of the following to turn certain genes on or off?
Nov 2, 2012

REGULATORY PROTEINS



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