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

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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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.