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Zarrin [17]
3 years ago
12

Imagine that you've discovered a regulatory sequence thousands of base pairs away from the promoter and that when this sequence

is lost due to mutation, levels of gene expression decrease sharply. This sequence is most likely ______.
A. A silencerB. An enhancerC. A promoter-proximal elementD. A promoter
Biology
1 answer:
Tresset [83]3 years ago
4 0

Answer:

An Enhancer

Explanation:

Enhancers are the regulatory sequences and are generally located 80-160 base pairs upstream of the transcription start site. Enhancers have bidirectional elements that are involved in the initiation of transcription. Enhancers serve as the binding sites for activators to increase the concentration of activators in the vicinity of the promoter and thereby increase the rate of transcription of the gene.

According to the given information, the loss of a regulatory sequence led to a reduced level of transcription of the gene. This means that the regulatory sequence was involved in the upregulation of transcription. The presence of the sequence far away from the promoter makes it an enhancer.

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Explanation:

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position vs time for two cars which statements best describe the motion of car a and car b check all that apply
jekas [21]

Answer:

Option 1, 2, 5

Explanation:

Options for the question

  1. car a and car b are both moving toward the origin.
  2. car a and car b are moving in opposite directions.
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  4. car a and car b started at the same location.
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Solution -

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The slope of such curves determine the velocity of the object at all its position within the graph. The steeper the slope is, the faster the the object is moving.

Hence, the following statements are correct

Option 1, 2, 5

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Which unit is more useful to measure in. Milliliters or liters and why?
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Liters because liters are larger than milliliters.
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Which step is a protein formed during gene expression?
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