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adell [148]
3 years ago
7

The ilv-leu operon of Bacillus subtilis comprises seven genes necessary for the biosynthesis of isoleucine, valine, and leucine.

The structural genes of this operon are transcribed when these amino acids are deficient in the cell. The VanA operon codes enzymes that modify the binding targets of antibiotic Vancomycin and therefore give antibiotic resistance to the bacteria. The structural genes of this operon are transcribed when the antibiotic Vancomycin is present in the environment. The ilv-leu operon is ____ operon, and the VanA operon is _____ operon.
Biology
2 answers:
Jlenok [28]3 years ago
4 0

Blank 1: Repressible operon.

Blank 2: Inducible operon.

Mnenie [13.5K]3 years ago
3 0

The ilv-leu operon is a repressible operon.

The Van A operon is a Inducible operon.


An operon is a genetic unit of coordinated expression. It comprises a group of adjacent structural genes encoding the enzymes of the same metabolic pathway, as well as the regulatory sequences affecting the transcription of these structural genes.

The mRNA resulting from this set is synthesized in a single block called polycistronic RNA.

These operons are submitted via effector molecules either to an inducing modulation or to a repressive modulation.

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