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Keith_Richards [23]
3 years ago
5

Imagine that you are studying the control of β-globin gene expression in immature red blood cells. (Mature red blood cells conta

in β-globin protein but lack a nucleus and, therefore, the β-globin gene.) If you deleted a sequence of DNA outside the protein-coding region of the β-globin gene and found that this increased the rate of transcription, the deleted sequence likely functions as ________.
Biology
1 answer:
Firlakuza [10]3 years ago
8 0

Answer:

Silencer

Explanation:

Gene expression is regulated by many upstream and downstream regulatory sequences. A regulatory site may serve as a binding site for positive or negative transcription factors to regulate gene expression. A regulatory site that binds negative regulators/ transcription factors to control transcription is called a silencer.

In the given example, the deletion of a DNA sequence outside the protein-coding region of the beta-globin gene resulted in an increased rate of expression. This means that the deleted sequence was a silencer and served to inhibit the expression of the beta-globin gene.

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Answer:

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