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Does mitochondrial DNA contain introns?
Yes, mitochondrial DNA does not contain introns. Mitochondrial DNA is a circular molecule that lacks introns, which are non-coding regions found in nuclear DNA.
How is the DNA in a prokaryote different from the DNA In the eukaryote?
DNA in prokaryotes is circular and in the cell itself, while the DNA of eukaryotes is coiled and in the nucleus (organelle) of the cell.
What is the primary transcript of eukaryotic genes?
the primary transcript usually has a exons and introns which need to undergo splicing to remove the introns and re-splicing to join the exons ..after this process the resulting mRNA is a mature mRNA.
In eukaryotes only exons are translated?
Correct. The mRNA transcibed from the DNA in the nucleus has both exons and introns; the introns are taken out and the exons are left in. The mended exons exit the nucleus and the introns stay in the nucleus. Only the exons are translated at the ribosomes. (In Eukaryotic cells only)
What is Heterogeneous nuclear DNA?
Heterogeneous nuclear DNA is the DNA present in the nucleus of eukaryotic cells that is not organized into chromatin. It includes DNA sequences that are actively being transcribed and processed, as well as regions of repetitive elements and non-coding DNA. This dynamic pool of DNA plays a crucial role in gene expression regulation and cellular function.
Why do eukaryotic genes have introns but introns are absent from prokaryotic cells?
Look at the sheer amount of DNA that is contained into a eukaryotic gene (eukaryotes have more DNA to code for and so they can leave some of the DNA out, also look at the way the DNA is formed i.e. Eukaryotic genes are double stranded helixes and prokayrotic genes are a single strand of circular dna.
The difference between prokaryotic and eukaryotic DNA?
The difference is that eukaryotic DNA is organized into a well defined nucleus and prokaryotic DNA is not. An example of a prokaryote is bacteria (or a bacterium). Humans and fungi are eukaryotes. Prokaryotes also do not have introns (DNA that is not expressed), while Eukaryotes do.
Why prokaryotes do not have introns?
Prokaryotes do not have introns in their DNA because they lack a nucleus and have a simpler genetic organization compared to eukaryotes. Their genes are typically continuous sequences without interruptions, unlike eukaryotic genes which can have introns that need to be spliced out during gene expression.
Does mitochondrial DNA contain introns?
Yes, mitochondrial DNA does not contain introns. Mitochondrial DNA is a circular molecule that lacks introns, which are non-coding regions found in nuclear DNA.
How is DNA in a prokaryote different than from DNA in a eukaryote?
DNA in prokaryotes is typically circular and exists as a single chromosome located in the nucleoid region, while eukaryotic DNA is linear and organized into multiple chromosomes housed within a membrane-bound nucleus. Additionally, prokaryotic DNA generally lacks introns and is not associated with histones, whereas eukaryotic DNA is associated with histones and often contains introns and exons. These structural differences reflect the complexity and organization of cellular processes in eukaryotes compared to prokaryotes.
How is DNA in a prokaryote different from DNA in a eukaryote?
DNA in a prokaryote is typically a single circular chromosome located in the nucleoid region, whereas DNA in a eukaryote is organized into multiple linear chromosomes within a membrane-bound nucleus. Prokaryotic DNA lacks histone proteins and introns, while eukaryotic DNA is associated with histones and contains introns that are removed during RNA processing. Additionally, prokaryotic DNA is not compartmentalized within a nucleus and lacks complex regulatory elements found in eukaryotic DNA.
Do exons contain noncoding DNA?
Exons are the portions of a gene that code for the final protein product and typically do not contain noncoding DNA. Noncoding DNA is more commonly found in introns, which are the intervening sequences between exons.
How is a bacterium's DNA different than eukaryote DNA?
In eukaryote cells DNA is inclosed in the nucleus of the cell. In prokaryote cells the DNA is diffused throughout the cell. DNA in bacteria is in a ring of a single chromosome that had no introns along the strand. DNA in eukaryotes is is strands that can be composed of chromosomes and many eukaryotes carry introns along the DNA. the amount of DNA present whether the DNA is housed in a nucleus or not whether the DNA is linear or circular all of the above are differences between prokaryotic and eukaryotic DNA
Which of these statements does not describe introns?
Non-expressed
What is unique about thr DNA of eukaryotes?
Eukaryotic DNA is unique due to its structure and organization; it is linear and organized into multiple chromosomes housed within a membrane-bound nucleus. Additionally, eukaryotic DNA contains introns and exons, allowing for more complex gene regulation and splicing. Eukaryotes also have mitochondrial DNA, which is circular and inherited maternally, contrasting with the nuclear DNA. This complexity contributes to the greater diversity and functionality of eukaryotic organisms compared to prokaryotes.
How is the DNA in a prokaryote different from the DNA In the eukaryote?
DNA in prokaryotes is circular and in the cell itself, while the DNA of eukaryotes is coiled and in the nucleus (organelle) of the cell.
How is the DNA in prokaryote different from the DNA in a eukrayote?
Prokaryotic DNA is typically circular and located in the nucleoid region, lacking a membrane-bound nucleus. In contrast, eukaryotic DNA is linear and organized into chromosomes within a membrane-bound nucleus. Additionally, prokaryotic DNA often contains fewer introns and is usually associated with fewer proteins than eukaryotic DNA, which is more complex and includes a variety of regulatory sequences and histones.
