Replication Definition and 39 Threads

Complex biological entities (like cells) can replicate while things (like molecules or organelles) can replicate within their internal environment. Here is a nice schematic picture of what is going on in these situations: From the article: Nobuto Takeuchi, Namiko Mitarai, Kunihiko Kaneko...

Replication of SARS-CoV-2 in adipose tissue determines organ and systemic lipid metabolism in hamsters and humans Source: https://www.sciencedirect.com/science/article/pii/S1550413121006215?via%3Dihub Source (original German, quote via Google translate)...

Here is one you can try at home:https://www.sciencedirect.com/science/article/pii/S2352409X19305371Experimental replication shows knives manufactured from frozen human feces do not work Author links open overlay panelMetin I.ErenabMary AnnRaghantia Show more Outline Share Cite...

There is a fascinating story that I'm sure a lot of you have followed. In 2012, a top mathematician, Shinichi Mochizuki[1], has claimed to have solved the ABC conjecture[2] (an important longstanding problem in number theory), using his own very unique, complex, and abstract Inter-universal...

Why (A) and (B) need to break phosphoanhydride bonds? Thanks

I'm aware that in autoradiography a film is produced which display the exact location of radioactive substances (for e.g. labeled probe in southern blotting ) as dark bands by passing X-ray through the sample (southern blot). But I do not understand, how does autoradiography detects replication?

So you have two alleles for every one gene, and the chromosome is composed of 2 homologous chromatids that have one of the 2 alleles for the specified gene on each chromatid. when you have to replicate that chromosome the way I understand DNA replication is is that you have a serious of...

Hello! I am a medical student with an upcoming biochemistry exam, and I'm struggling with the concept of leading and lagging strands. My question is: Can the leading and lagging strand role be switched depending on the direction we look at the dsDNA? Or is the leading and lagging strand...

New article, abstract: http://science.sciencemag.org/content/355/6331/1330 abstract:

I've heard tell of a science journal like Science or Nature that a) only publishes studies with null results, and/or b) only publishes heavily replicated studies. Is this true? and if so, what's it called?

I found this interesting computer animation representing DNA functions in cells. My questions: 1) How precisely can we actually magnify cell functions, and what is preventing us from peering in as closely as depicted in the video (keeping in mind that I know it's probably technologically...

Are certain DNA (genetic) strands structurally better build for survival than others? If yes, is there a term for this? For example, is there a specific order of nucleotides that is harder to destroy than another? Or if there is a specific order/combination of nucleotides that would have...

I am wondering about the actual preconditions that give rise to DNA replication. Basically, what are the actual environmental conditions/factors that created the process of replication in the first place. I gather before replication, there was random atom and molecule sorting, and at some...

While I have to admit the question in its summarized version seems to be not very well defined (and naive, of an easy answer), so that I desire to at least make it sound less stupid. Or at least I hope. After reading all of this it might sound even worse though (no promises).I like reading about...

Hello, I notice that when DNA is replicated, it is split apart. This is the same as the start of transcription, however I suppose the difference is that DNA is replicated with DNA polymerase, and RNA with RNA polymerase. Do these two polymerases compete for a strand of DNA in order to do their...

Hello All! I have a Bio Test on DNA Replication tomorrow and I had a quick question. (I'm in 8th grade) When the textbook states that DNA can only be replicated from the 5' to 3' direction, I don't get it. If it's like this PT. B -> 5' ---------- 3' 3' ---------- 5' <-...

Ok, this is a "stupid" question that I probably should really know the answer to. I am researching bacterial invasion and replication within host cells, A. polyphaga to be exact. I grow the amoeba into a monolayer, add a certain number of bacteria to each sample, and allow them to incubate for...

In semi-conservative DNA replication why does it happen that one of the new strands formed is discontinuous while other is continuous?

Before I ask my question, I would like to state that I am not a Biology student. I am actually a Chemistry student who has a small section on Biochemistry in his syllabus. Now, my problem lies with part (ii). Mechloroethamine obviously hold the DNA strands together and prevents the DNA...

Homework Statement Not exactly homework... "What are the uses of bacterial DNA replication in molecular biology?" The Attempt at a Solution Am I correct to say that 'the bacterial DNA replication process can be used to artificially create DNA that we desire and then use it for some...

Hi! Was hoping I could get someone to explain this question to me..having some trouble with it... "At each origin of replication, DNA synthesis proceeds bidirectionally from two replication forks. Which of the following would happen if a mutant arose having only one functional fork per...

can matter and anti matter manipulation be used for replication of cells

The purpose of meiosis is to create genetic variation unattainable through mitosis by, in effect, randomly replacing one homolog from each homologous chromosome pair with another one from a different individual. There is also an exchange of genes between homologs before this replacement occurs...

Hi all, What is a good way to use replication methods for estimation? For a dataset with no design information, only weighting remain. I know the basic principles of replication. Are there any considerations to use replication effectively? There is a public data of 15,000 people from the...

This was a quiz question recently in my microbiology class: In what way are transcription and DNA replication compartmentalized in eukaryotes? a. they occur in the same compartment b. they occur in separate compartments c. one must be finsished before the others start d. they are...

http://nextbigfuture.com/2010/12/blacklight-power-announces-independient.html Can any physics buffs here make heads or tails of this? I really don't know what to think about this technology anymore :confused:...

hi, DNA and RNA seem to be very peculiar molecular structures that are able to replicate themselves, and they are unique regarding this point, right?. But which chemical "magical" phenomena is responsible for this ability to reproduce?

I recently saw some rather neat real-time replications of DNA being replicated in my Chemistry class (Still in High School). The intersting thing is that this requires some astoundingly complex enzymes to work. I would take a wild guess and say that an RNA-based organism would have a...

How do operons interfere with DNA replication, if at all? I know, for example, that repressors can stop RNA polymerase, keeping a segment from being transcribed, but it's still replicated. How is this? My guesses are: A. The enzymes involved in DNA replication can run right over them. or...

Hey all I'm working with a simple 'robot' that consists of a sensor (rotary encoder) and a DC motor. Both are coupled through a computer. My goal is to simply replicate any rotation the sensor undergoes using the motor. For example if the sensor turns one revolution in a second, I want the...

Why is the frequency spectrum of a sampled signal replicated? We have a Low pass filtered signal sampled well above nyquist rate. I can't understand why the spectrum is replicated.

During meiosis the cell duplicates all its chromosomes, then divides twice to ultimately end up with 4 haploid cells. What is the logic behind duplicating the chromosomes first? Couldn't the organism get all the genetic recombination benefits of meiosis (independant assortment, crossing over...

I am an electrical engineer currently studying alternative energy, and I realize this would be a very difficult task but I would like some feedback on whether this study has been attempted or if people are afraid to attack it. When trying to think of how to purify the air i first turned to...

Hi, I was doing this question & I just want to make sure I've got it correct: A quantity of DNA was labelled with radioactive nitrogen. It was then allowed to replicate three times using non radioactive to synthesise the new DNA strands. What proportion of the final mass of DNA would you...

In eukaryotes, DNA polymerase works in one direction only. Does that mean that one enzyme works simulteneously on both new strands, or is there on polymerase working on each strand. If the latter is true, then the two strands are independent of each other in a sense. If so, which polymerase...

I once read a 1997 physics book. At the end of the 'static electricity' chapter, it explains the mechanism of DNA replication and protein synthesis (in which static electrical force plays a critical role). However, it says something like 'this model has not been seen in action. It is consistent...

Hey In what respects is the process of gene transcription similar to the process of DNA replication? Thanks Lindsay

[?] What is a thought virus? You can call it a meme or an idea that replicates by symbiotically infecting human minds and altering their behavior, causing them to propagate the meme. Our society have always been buzing with these meme around through communication. You might be...

Greetings. I just have a small question about DNA replication correction. My textbook states (might contain errors of translation): Now my question is about locating the place of the DNA error. Locating the place of a wrong nucleotide might seem logical, but how can the enzyme locate the...