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Histone modification associated with chromatin condensation is typically the trimethylation of histone H3 at lysine 9 (H3K9me3). This modification is recognized by proteins that promote the formation of heterochromatin, leading to a more compact and transcriptionally inactive chromatin structure. Additionally, H3K27me3 is another modification that can contribute to chromatin compaction and gene silencing.
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A complex of proteins and DNA strands that are loosely coiled such that translation and transcription can occur?
This complex is likely the chromatin, which is composed of DNA wrapped around histone proteins. This loose coiling allows for access by transcriptional machinery during transcription and translation processes. The chromatin structure can be modified to regulate gene expression.
If a cell were unable to produce histone proteins what would be a likely effect?
Without histone proteins, the DNA would be unable to tightly coil and package properly, potentially leading to gene expression dysregulation, DNA damage, and alterations in chromatin structure. This could result in various cellular abnormalities, including impaired cell division and potentially cell death.
What problem might arise in histone-deficient chromatin?
Histones function in the packaging of DNA as well as in regulation of gene expression in eukaryotic (and some bacterial) cells. Histone proteins are among the most highly conserved proteins in eukaryotes, emphasizing their requirement for the survival of more complex life forms. Cells deficient in histones likely would not survive as the complex genomes of eukaryotes would not have the necessary levels of regulation as well as the DNA would not be efficiently packed and would be fragile and highly susceptible to damage.
In eukaryotes gene expression is related to the coiling and uncoiling of what?
In eukaryotes, gene expression is related to the coiling and uncoiling of DNA around histone proteins, forming chromatin. When DNA is tightly coiled around histones, it is less accessible for transcription, leading to reduced gene expression. When DNA is unwound, gene expression is more likely to occur.
Is saturated air being cooled likely to produce condensation?
Yes it will produce condensation
What problem might arise in histone deficient chromatin?
Histones function in the packaging of DNA as well as in regulation of gene expression in eukaryotic (and some bacterial) cells. Histone proteins are among the most highly conserved proteins in eukaryotes, emphasizing their requirement for the survival of more complex life forms. Cells deficient in histones likely would not survive as the complex genomes of eukaryotes would not have the necessary levels of regulation as well as the DNA would not be efficiently packed and would be fragile and highly susceptible to damage.
Why is it most likely to rain?
Condensation and evaporation causes the water cycle to work.
Which action would be most likely to limit scientific research on genetic modification on food?
Governments adding restrictions on research on genetic modification governments adding restrictions on research on pesticides
What type of condensation nuclei are most likely to cause to clouds form?
Salt particles
Tangled fibrous mass inside the nucleus?
chromatin network
What is DNA wrapped around proteins called?
Tangled strands of DNA are in Prokaryotic cells. This is because the DNA is free floating. The proteins are most likely tangled in the protein molecules.
What type of condensation nuclei are most likely to cause clouds o form?
Cloud condensation nuclei (CCN) are usually Sulfate aerosol (SO42- and methanesulfonic acid droplets).
