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adelina 88 [10]
2 years ago
15

BRAINLIEST!! PLEASE I NEED YOUR HELP!

Biology
1 answer:
lorasvet [3.4K]2 years ago
5 0

Explanation:

<h2>all of the above </h2>

I hope it's helpful for you ☺️

I am purple u

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No, CREs usually don't account for differences in gene expression levels.

Explanation:

<em>Cis</em>-regulatory elements (CREs) are non-coding DNA regions that regulate adjacent gene <em>transcription</em>. They usually do it by binding to transcription factors. They are in charge of influencing the rate of which transcription occurs, and less with how much a gene is expressed. On the other hand, trans-regulatory elements are DNA sequences that encode for upstream regulators that can modify or regulate <em>gene expression levels</em>.

Therefore, cis elements are not really in charge of expression levels, mostly transcription rates of single genes, rather. Trans elements are more involved in expression levels.

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c. immune functions.

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