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The two types of operons are Inducible and Repressible Operons.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoThe two types of operons that express negative gene regulation are repressible operon and inducible operon.
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Are hox genes regulated by operons?
No
What organisms have operons?
Operons appear most in prokaryotes, however can also be found in some eukaryotic organisms such as the nematode. The nature of this is because operons produce polycistronic mRNA, which is used mostly by bacteria, whereas eukaryotes use monocistronic mRNA.
Difference between inducible and repressible operons?
The differences between these two types of operons are significant. In the repressible operon, The product is the regulatory metabolite and starts in the "on" position allowing RNA primase to unzip mRNA. Also the repressor protein only bings to the operator gene in the presence of the regulatory metablite. In the inducible operon, The reactact is the regulartory metabolite and starts in the off position blockig the primase from unzipping mRNA. The repressor protein only binds to the operator gene in the absence of the regulatory metabolite.
How mutant organism assist scientists in understanding how normal physiological processes take place?
understanding of how operons are controlled was achieved by the "knockout" mutants- that each lacked one of the genes in the operons and its regulatory region.
Eukaryotic DNA sequences called enhancers have a function similar to the of prokaryotic operons?
Eukaryotic DNA sequences called enhancers have a function similar to the operators of prokaryotic operons. In eukaryotic cells, repressor proteins inhibit transcription by binding to silencers.
Do mitochondria have introns?
No, prokaryotes do not have introns, and therefore do not do RNA processing. However, eukaryotes do.
Proteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter are called?
Activators
What is a set of prokaryotic genes that are regulated and transcribed as a unit?
They are operons. The genes contained in an operon are expressed together or not at all.
Proeteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter are called?
inducer
Are operons found in eukaryotes?
"False. (I found the answer in my Biology textbook)" Not true. An operon is technically more than one gene sequence that is controlled by a repressor or signal. Recent research into eukaryotic genes, especially those in protists and chordates, have revealed that eukaryotes also have operons, though they are slightly different in complexity to the ones found in prokaryotes, giving rise to the conclusion that operons are more common than expected.
What are the proteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter called?
transcription factor
How is protein synthesis different in prokaryotes and eurkaryotes?
One way that protein synthesis differs between prokaryotes and eukaryotes is that gene groups that produce proteins are organized into operons in prokaryotes, but they are not organized into operons in eukaryotes. Also, protein synthesis in eukaryotes involves more protein and is a more intricate process than in prokaryotes.
