6,209 reputation
2842
bio website
location Marseille, France
age 33
visits member for 1 year, 8 months
seen 17 hours ago

I am a computational biologist with a background in biology, not computers. My PhD work was on gene prediction and comparative genomics but my current research is in systems biology, specifically protein-protein interaction networks.


2d
comment How to determine whether the energy of a stem-loop fold is significant or not?
A predicted stem loop of what? A nucleotide chain presumably, and most likely RNA but you need to tell us.
Apr
21
comment is there a way to do batch download for all gene pathways?
What pathways? From which database? What species?
Apr
16
comment Percentage of understood human DNA
You would need to define "understanding". This is not a book where we simply have to read the words. Each "word" can have multiple different functions and we can't say with complete certainty that we understand any of them 100%. We have a pretty good idea about a relatively large part of it but understand is a loaded word.
Apr
16
comment Regarding the relation of observed human nature with evolution and/or genetics
You will need to be way more specific than that. What behavior? Which aspect of psychology?
Apr
16
comment What is the main challenge in creating a chemical male contraceptive?
@shigeta neither men nor women have any desire to take chemical contraceptives. I don't see why that would be truer for men than for women. The only difference is that women are expected to while men aren't.
Apr
14
comment What exactly makes bananas go brown?
Ah OK, thanks. I thought you were suggesting that the oxidation of tyrosine molecules was responsible for the change of color.
Apr
13
comment What exactly makes bananas go brown?
Could you explain how tyrosine gets in there? What is it that's being oxidized? I assume you mean free tyrosine molecules and not those incorporated into protein right? If I'm missing something obvious, please point it out, biochemistry was never my strong point and I haven't worked in a wet lab since university.
Apr
13
comment Is it possible to have life in vacuum?
Define life. You can probably get viral spores that can survive and even some extremophile bacteria but in a dormant state. Would you consider something that is not interacting with its environment in any way at the moment alive?
Apr
13
comment Electronic cigarettes (e-cigs), any health risks?
Please source your claims. You mention a risk of "nicotine intoxication". What's that? The nicotine high is precisely the reason why people smoke. Nicotine is not in itself particularly harmful, the dangers of smoking are primarily related to imperfect combustion and the subsequent production of CO and free radicals, not to the ingestion of nicotine as such. I have read pretty much everything published on the subject and have yet to see any evidence that e-cigs are harmful and have seen a lot of evidence that they are much safer than normal cigs.
Apr
12
comment Does Science Say That We Should Die?
-1 because this answer is riddled with inaccuracies and plain old errors. 1) Apoptosis is not relevant to the death of individuals of multicellular species. 2) You don't even mention telomere shortening which is actually relevant 3) Cancer cells are not immortal because they ignore apoptotic signals, that's part of it but does not confer the ability to replicate indefinitely (telomeres again). 4) What does genetic drift have to do with anything? 5) How would an immortal creature spontaneously evolve? There would be no selection for mutations occurring during the individual's life.
Apr
11
comment Did the eugenics program in Nazi Germany have a measurable effect?
I really doubt that any effect would be visible in a single generation. We'd need data to back that up but I would be surprised if any difference is observable.
Apr
10
comment How the lungs clear themselves?
@Anixx of course you do, try going into a dusty room and breathing deeply, you will sneeze or cough.
Apr
1
comment Banana-only diet for humans
It certainly sounds like nonsense but this is veering a bit too close to medicine to be on topic here.
Mar
28
comment Burns' “To a mouse” - what species of mouse?
Very much, thanks! Deleting my previous comments. Off topic but which word actually refers to grain?
Mar
28
comment DNA of the human body?
+1 fingers are a very good example. By the way, for future reference, you can choose between the full size image, a medium one or a small one by adding m and s respectively before the .png in the URL of the image uploaded to imgur.
Mar
28
comment How does the creative process of Biological Evolution work?
@LotusBiology Whatever your own positions are, the arguments you are presenting in this answer are based on several assumptions that are quite frankly wrong. Whether you believe them or not is another matter but they are classic examples of the type of question that arises when people have been influenced by the kind of pseudoscience of which the video you linked is an example. I'm not about to watch an hour of that drivel, but for example, evolution does not attempt to give an answer to how life originated, only to what happens after it has arisen.
Mar
28
comment How does the creative process of Biological Evolution work?
@LotusBiology so? We are two different people giving different answers, what's your point? Anyway, while there are errors at the cellular level, where the copied DNA is not identical to the template, there are no "errors" in the evolutionary level. The term carries a certain implication and it was that implication I wanted to avoid. As far as evolution is concerned, there are no errors, only changes.
Mar
27
comment How does the creative process of Biological Evolution work?
@JackAidley I'm not sure that it is and I'm very sure that it shouldn't be. There are conflicting views, see Creationist "canard" refutation type questions? and Are questions about creationism or intelligent design on-topic here? and Just how (un)welcome is creationism here?. Please weigh in on one of these meta posts, I don't think there's true consensus yet. I think we should welcome such questions (as long as they are Good Questions®) and just shoot the
Mar
27
comment How does the creative process of Biological Evolution work?
@fileunderwater yes, that is a very good point. I commented when this question was at -2 with 1) no explanation of why people downvoted 2) no attempts to edit it into shape (I have now tried to do so) 3) no suggestions on how to improve. Had this been on another subject, we would have done all three. I just don't want us to downvote only because we disagree with the views expressed. I feel that one of the most important things this site can accomplish is to refute pseudoscience and any creationist/ID advocate who's willing to post here deserves a good answer. Shoved down their throats.
Mar
27
comment DNA of the human body?
@Jody I kind of figured that's what you were after :). You're very welcome.