It is clear that long noncoding RNA (lncRNA) is highly prevalent in...

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It is clear that long noncoding RNA (lncRNA) is highly prevalent in many types of eukaryotic cells. Why is that? Please take some time to do a bit of research and then speculate as to why lncRNA, and not another type of molecule like a carbohydrate or an enzyme, has evolved as such an important regulator of so many different functions. Be sure to justify your opinion with examples.
Second, respond the following three postings, in which you agree with them or disagree with them, and explain why. Your responses should be well thought out, consist of at least a few sentences, be courteous, and be respectful.

First post
LncRNA is a type of non-coding RNA. It is transcribed from DNA, but is not translated into specific proteins. They are poorly conserved throughout species. This type of RNA was found to be
in predominantly eukaryotes because of pathology and development of specific organelles. They are rarely found throughout a cell in large amounts enough to cause any specific action. Usually these lncRNAs are poorly translated, giving them little function. However, they have been seen in cancers like leukemia because of this poor translation. Some of them have been known to code for certain proteins and functions, but have been known to be unstable in this process. Eukaryotes are cells that have many structures with different functions. Alexander F., L., & S., E. (2015, January 6). Non-coding RNA: what is functional and what is junk?

Second post
RNA contains genetic material and generally aims to transfer information in some way through its genes. Expression of lncRNAs have been detected in both single and multi-cellular eukaryotic organisms, yet their processing and mechanisms of action can differ. In a lot of cases they transport such information. I believe that there are different layers of functionality and some of the more fine-tuned layers have yet to be explained completely. In the case of lncRNA there are multiple examples of less pronounced functionality. The nucleo-cytoplasmic division serves the purpose of separating what is to be translated and what is not needed at that stage. lncRNA can produce weak signals when processed despite being nonfunctional. They can even associate with protein complexes. Very high expression levels are generally required to denote functionality in molecular biology. The lncRNA serves the eukaryotic cell by assisting expression through communication and association with particles directly involved in expression.

Third post
Long non-coding RNAs are a type of RNA that is described as being transcripts with more then200 nucleotides. As we know that lncRNAs are usually found in eukaryotic cells more than in prokaryotic. Some of the significant work lncRNA do, is that is involved in embryonic development, human diseases such as cancer, cell differentiation, translation, and many more. For example, in human disease it can impact the transcription of other gene. By preventing the binding of transcription factors and transcriptional mediators to the promoters. Another thing is that in embryonic development, many lncRNAs are transcribed from large regions flanking transcription factor (TF) genes and other regulators that are essential during embryonic development.

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Various sources have confirmed that almost all of the eukaryotic genome is transcribed at some point. However, the quantity of various types of transcripts varies in a typical cell. Long non-coding RNA (lncRNA), are a class of transcripts that are present at a very low level and usually do not translate to any functional protein. The high prevalence of this lncRNA in eukaryotes and its evolutionary aspect can be explained by considering the concepts from the area of population genetics.
Among the major findings in population genetics, one exhibited that in a given species, the size of the breeding population can influence the capability of natural selection to clear out marginally deleterious mutations. Slight deletion type of mutation is more powerfully identified and eliminated through natural selection if the population is large. Lack of selection pressure can lead to fixation of some neutral and slightly...

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