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Sophie [7]
3 years ago
14

Suppose that gene X is induced in E. coli cells when they are treated with high levels of ethanol. A mutation in region 1 in the

upstream region of gene X results in high-level expression under basal conditions, and a mutation in region 2 results in an uninducible gene. What would you expect from a strain in which both regions 1 and 2 are mutated?
Biology
1 answer:
tangare [24]3 years ago
6 0

Answer:

Because there is a mutation in region one that causes high level expression even in the absence of ethanol, region 1 must bind a transcriptional repressor and regulation of gene X must occur by relief of repression. Since a mutation in gene 2 results in a uninducibility of the gene, region 2 must bind a transcriptional activator. in the absenece of an activator the reprssor becomes irrelevant and the gene is in active regadless of conditions. Mutations in both regions 1 and 2 have the same effect as a single mutation in region 2, because in the absence of a bound transcriptional activator the repressor is irrelaevnat and the gene is inactive regardless of the presence or absence of ethanol

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Answer:

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Explanation:

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3 years ago
Match each description with the correct taxonomic grouping.
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1 .insecta

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<u>Explanation:</u>

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2.eight legs and two body parts- arachnida

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Answer: The question is incomplete because the options were not given but the options has been gotten from another website.

Here are the options.

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Explanation:

This is because wood is a Renewable resource because Renewable resources are resources that can be replenish or reproduce again after usage either by naturally producing another one. Theses resources are not exhausted because they can naturally be reproduce again. Wood is a Renewable resources because new ones are planted to replaced the used ones.

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