Do eukaryotes have an operon system?

Prokaryotic Cells Occurs in the cytoplasm There is a single origin of replication DNA gyrase is needed Replication is very rapid (Bacteria can take...

Eukaryotes have multiple replication forks and therefore if replication occurs, various precautions need to be set in place to prevent unwinding of the DNA strand in multiple sites in a...

Since the DNA is in the nucleus and never comes out of it, transcription occurs in the nucleus.

Protein synthesis includes transcription and translation. Transcription occurs in the nucleus and produces the mRNA that will be translated by tRNA. Once a mRNA molecule is processed, it leaves the...

The of E . coli is a cluster of three structural genes, encoding involved in lactose metabolism and the sites on the DNA involved in regulation of the operon. Normally...

In , i gene is called Regulatory gene. It produces Repressor which bind on the operator region and hence does not allow the movement of Rna polymerase ,

In switch on condition of gene A codes for transacetylase (an enzyme), which convert lactose into its active form i.e. allolactose.

Lactose does not easily diffuse across the E. coli and must be actively transported into the cell by enzyme permease the enzymes galctosidase, permease and transacetylase are produced in...

The lac operon codes for required to transport lactose into the cell and to break it down. CAP enables to use alternative carbon sources such as lactose in the...

If the level of inducer lactose is low then the operator is again blocked by repressor so that the structural genes are repressed once again; to repress the synthesis...