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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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When a soccer ball is in flight, what forces are acting on it?
jeka94

Answer:

Force applied on the ball when it is kicked, gravitation pull and frictional force

Explanation:

When the ball is kicked it starts accelerating, the moment when it leaves the foot acceleration starts decreasing. Here two more forces start acting on it, one is friction force caused by wind and second is tradition pull of the earth. Both these forces slow down the motion of a soccer ball and it slows down and stops.

4 0
2 years ago
Most organisms can be divided into two categories, namely: prokaryotes and eukaryotes. What is the main difference between these
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3 years ago
Biology 1 midterm | ID 210093 generated 9 2019​
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Answer:

Hi there!

Please post questions! Thanks

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State one way the white blood cells protect the body from foreign microbes
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 <span>Phagocytosis of the microbes that enter the body or tissues. Also lymphocytes build specific antibodies against microbes.</span>
7 0
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Read 2 more answers
Rna in cells differs from dna in that ___________________. select one:
irinina [24]
Hello! 

RNA in cells differs from DNA in that it is single-stranded and can fold up into a variety of structures.

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Viruses don't have DNA, only RNA. They only replicate in the host's cells by copying their own RNA information. 

Have a nice day!
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3 years ago
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