which of the following mutations could lead to constitutive expression of the genes of the lac operon? view available hint(s)for part a hint 1for part a. constitutive expression of a gene means that that gene is always expressed, i.e., the protein is always produced. which of the following mutations could lead to constitutive expression of the genes of the lac operon? a mutation in the operator sequence a super repressor mutation a mutation in the lac-y gene a mutation in the lac-z gene

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06-12-2022
Biology

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which of the following mutations could lead to constitutive expression of the genes of the lac operon? view available hint(s)for part a hint 1for part a. constitutive expression of a gene means that that gene is always expressed, i.e., the protein is always produced. which of the following mutations could lead to constitutive expression of the genes of the lac operon? a mutation in the operator sequence a super repressor mutation a mutation in the lac-y gene a mutation in the lac-z gene

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ikarikayah ikarikayah · Answer 1 · 2022-12-08T09:56:27-05:00

Mutations that can cause constitutive expression of the lac operon gene are super repressor mutations.

The Lac operon or lactose operon is an operon that regulates the production of genes related to the metabolism or breakdown of lactose. Three types of genes are normally regulated together in the lac operon, namely the lacZ gene, the lacY gene, and the last gene. The regulation of expression of these three genes is regulated by the presence of the lactose molecule.

If there is a mutation, then two possibilities occur, namely:

The operator will not bind to the RNA polymerase so that transcription does not occur.
Gene regulation products (activators and repressors) will paralyze the operator of the operon. This is done because if the operon operator is active, it will cause mutations on a larger scale. To avoid this, negative regulation of regulatory gene products occurs, namely the repressor will bind to the operator, although there may be an inducer to prevent large-scale mutations.

Learn more about mutations of the lac operon at https://brainly.com/question/29308163

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