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comment List of np-hard problems in biology/bioinformatics
Try asking this on biostars.org, the people there probably have thought more often about the question if a problem is np-hard.
Apr
11
comment Did the eugenics program in Nazi Germany have a measurable effect?
I think there is no possibility to study this, because there were several other factors having a big impact on the population, for example a war.
Apr
4
comment Do you have experience with PacBio?
I have never done this calculation for a sample this small with PacBio. To keep it short, from one SMRTcell you would get 30x coverage of the E. coli genome (no fiction, they have done 3 cells and got 100x coverage). I guess this is a bit oversized for your short samples. Still, I would rather not do any more "virtual" calculations about this, you need to have someone you can talk to who understands your experiment and probably has seen more PacBio sequencing than I have.
Apr
4
answered Do you have experience with PacBio?
Apr
3
comment What is the energy consumption of the brain?
Do you mean the activity as visible in an EEG? Because the brain mainly uses up energy as far as I know.
Mar
25
comment Antimicrobial Compounds in Common Plants?
Onions, garlic, probably anything acidic, depending on how you use it? But this sounds a little like a medical advice question for home remedies.
Mar
17
comment How does DNA mess up
The Wikipedia entry for DNA repair might be helpful to understand the types of damage and errors that can occur. en.wikipedia.org/wiki/DNA_repair
Mar
11
comment Why do humans find baby animals cute?
As you cannot ask the animals about it, there is no way to distinguish between explicit and implicit antipathy. Human children, the only ones you can ask, also show both.
Mar
11
comment Why do humans find baby animals cute?
In animals having litters there is often one animal which is weakest. The siblings compete for food, warmth, safety. Competition does not necessarily mean active fiting. The weakling of a litter often dies without human interference, or is mobbed out of the group. And of course there is competition between adults of the same species. Just look at humans.
Mar
10
comment Why do humans find baby animals cute?
The cuckoo does not necessarily hate foreign babies. A young cuckoo outcompetes its "adopted" siblings. It usually wins, because it is growing fastest. And competition between siblings is also found in humans and many, many animals. And as liking other babies might not be disadvantageous, it has not been eliminated by evolution. And, as evolution is random, even if it would be disadvantageous there is no guarantee for it to be eliminated. I am not speculating about hormones, they might not be the only factor, but they are a fact.
Feb
21
comment Genome Assembly Using Reads
It does in fact mean all possible 4mers. I don't know how much material you get from the course, but they refer to this paper: citeseerx.ist.psu.edu/viewdoc/…
Feb
17
comment Why do the humans become sleepy after meals?
That is a very biased experiment, to say the least. Why, for example, do people then go for a "digestion walk" and actually feel it helps them to digest?
Feb
14
comment Regarding kidney transplant
This link describes the different ways of diagnosing/confirming death prior to organ donation. It might help answering your question.
Feb
14
answered Do Yersinia genus spp have anything movement factors?
Feb
13
comment To understand this slide about enterobacteriae?
Well, I wouldn't have called this an answer, as I has no sources stated at all (mostly because the main source were my memories), but if it is enough of an answer, fine.
Feb
13
comment To understand this slide about enterobacteriae?
I guess, it is meant, that Ps. aeruginosa has the endotoxin as (one!) virulence factor. This endotoxin leads to sepsis and endotoxic shock. Though, sepsis and endotoxic shock can also be caused by S. marcescens and (some strains of) E.coli, so they are not a definitive sign for Ps. aeruginosa infecion. LPS are actually endotoxins, lipid A (or A-lipid) is the component of endotoxins that attaches them to the outer membrane. So much I can get from the slide, but it is hard to understand without prior knowledge and a bit of additional reading.
Feb
5
comment How to design an experiment with scent triggered memory recall in humans?
From personal experience and also being curious about this phenomenon I can add: Sometimes normally unpleasant smells get "pleasant" by triggering a pleasant experience. And it does work the other way round as well: specific situations can trigger "smell hallucinations" of former similar situations. All in all, this is a very tricky thing to study, so you best start by asking around how it works for different people. For me, it is instant, it does not matter if the smell is pleasant/subtle/..., the memory is more important than the type of smell and a situation also triggers a smell.
Feb
5
comment Why do hummingbirds build nests with live ferns instead of dead materials?
A wild guess: Where living ferns and mosses thrive it is a damp environment. In a damp environment, dead plant material would start rotting fast. Thus, using living plants guarantees a more durable nest.
Jan
28
comment DNA content in seeds vs. fruit flesh
Cell walls are a major problem for (sequencing length) DNA extraction. You will normally have more usable yield from the fruit flesh than from hard seeds. Another problem might be essential oil in the fruit flesh, though.
Jan
23
comment Recalling memories by electrical impulses?
As far as I know, we do not know very much about the whole mechanism of memory. My guess is: no. You would be better off trying hypnosis.