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Anettt [7]
3 years ago
13

What role do insulator sequences play in the regulation of eukaryotic transcription? See Section 13.1 (Page 479) . What role do

insulator sequences play in the regulation of eukaryotic transcription? See Section 13.1 (Page 479) . They block binding of transcription factors to cis-acting promoter elements. They block binding of transcription repressors to cis-acting promoter elements. They block binding of transcription factors to enhancers. They block communication between enhancers and nontargeted promoters.
Biology
1 answer:
Airida [17]3 years ago
8 0

Answer:

D. They block communication between enhancers and non-targeted promoters

Explanation:

Insulator sequences are the group of DNA sequences that protect the protein-coding regions of the DNA from the surrounding regulatory sequences. Some insulator sequences are present between the enhancers and promoters of a gene. These insulator sequences do now allow these enhancers to regulate the expression of genes by sending inappropriate signals.

However, if the insulator sequences are not present between the enhancers and promoters of certain genes but are located somewhere else, enhancers can upregulate the expression of these genes.

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Elden [556K]

Here, you have a case of codominance.

You know that because they tell you that in the presence of both alleles (purple and white) you have a light violet. No one is dominant over the other, both appear as a combination of alleles.

Purple: P

White W

A heterozygous plant has PW alleles.

PW x PW = PP PW WP WW

25% chances of PP (deep purple)

50% chances of PW (ligth violet)

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4 years ago
A retreating glacier leaves an environment of lifeless glacial deposits, including sands and gravels. Retreating glaciers often
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<h2>Succession </h2>

Explanation:

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3 years ago
What evidence do scientists have to support the theory of PANGAEA?
Galina-37 [17]

Answer: fossil records

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7 0
3 years ago
A plant is living along the shore of a deep, large, and cold body of fresh water. The top of the body of water is full of life a
quester [9]

Answer:

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7 0
3 years ago
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0000 UNITE
Alex777 [14]

Answer:

tundra, taiga, temperate grassland, rainforest

Explanation:

Tundra is known to be the coldest of all the biomes due to the high latitudes in which these areas are found. In this biome, the growth of the trees is limited by the low temperatures and the growing season is restricted to the summer season. The taiga is a type of biome composed of forest found in the subarctic areas, it is for that reason that taiga regions are also called boreal forests. Temperate grasslands are areas where grasses are dominant with very variable temperatures depending on the season (i.e. summer to winter seasons). In this biome, trees are relatively uncommon. Finally, the rainforest is the most diverse tree-rich biome where the high temperature and humidity conditions are optimal for life.

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3 years ago
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