Genes which code for transcription factors can have a large influence on gene expression. Mutations in genes that control gene expression can have large and sudden effects on the evolution of species. A protein that binds to a site on DNA next to a gene and blocks the transcription of that gene, thus preventing the synthesis of a protein that the gene encodes is known as a:

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Biology

Brady

21 November, 09:49

Genes which code for transcription factors can have a large influence on gene expression. Mutations in genes that control gene expression can have large and sudden effects on the evolution of species. A protein that binds to a site on DNA next to a gene and blocks the transcription of that gene, thus preventing the synthesis of a protein that the gene encodes is known as a:

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London Bass · Answer 1

A protein that binds next to the gene and blocks the transcription of that gene thus preventing the sythesis of a protein that the gene encodes in called Repressor protein or repressor element.

Explanation:

Repressor protein is a specific type of protein that binds to the specific site of target DNA molecule such as operator site thus blocking the expression of that gene.

For example Lac I gene of lac Operon encodes a repressor protein which in absence of lactose binds to the operator site of Lac Operon thus blocking the expression of 3 structural genes Lac Z, Lac Y and Lac A of Lac Operon.