network profile
| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 1 year, 1 month |
| seen | Feb 19 at 11:55 | |
| stats | profile views | 6 |
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Apr 17 |
awarded | Yearling |
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Feb 19 |
answered | How does natural selection favour large body mass and size (or so it seems) |
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Feb 15 |
comment |
How is evolution possible in contemporary humans? I just want to emphasise that "races" is more of a social construct than a scientifically strictly defined category (see Razib Khan's comment here: blogs.discovermagazine.com/crux/?p=1350#.UR45L1qcYVo) . So while I agree with a term "alleles associated with some populations" the other terms you use ("race has a genetic component", "less white") are more murky (unless, in the latter example, you're talking about alleles associated with skin color - but then again, they do not necessarily correlate with ancestry). |
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Feb 15 |
awarded | Supporter |
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Feb 15 |
answered | Confusion related to gene expression |
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Nov 16 |
comment |
By What Mechanism can Felines Reverse Diabetes? I've just had a look at en.wikipedia.org/wiki/Diabetes_in_cats#Insulin_injections and I am not sure what more would you want. Although I do think that Wiki is wrong in saying that diabetic remission in T2 is unique to cats. Temporary remission happens even in T1 humans, and in T2 humans as well. |
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Nov 16 |
comment |
By What Mechanism can Felines Reverse Diabetes? Could you please provide any source of this information? And are you talking about type 1 or type 2 diabetes? Because I am pretty sure once you develop T1 you cannot get back, at least if you're a mammal. |
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Nov 12 |
comment |
How is evolution possible in contemporary humans? Can I just add here that evolution would happen even without any directional selective pressure? You're all talking about fitness and directional selection, whereas selectively neutral processes (drift, migration) can also dramatically change the allele frequencies in a population ergo evolve the populations (think asteroid and the dinosaurs). |
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Oct 31 |
awarded | Enlightened |
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Oct 31 |
awarded | Nice Answer |
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Apr 18 |
comment |
What are the limitations to current nucleotide sequencing technologies? @Daniel Yes, you're right in principle. But then if what you require is as-perfect and complete a sequence as possible, then I'd propose that the limitations are the same as they were before: DNA itself, with it's super high repetitive content, poliploidy. Sanger and positional cloning did not manage to solve this problem (hence gaps in finished human genome sequence) and they're regarded as the golden standard (am I that old already?). |
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Apr 18 |
answered | Analysing the results of real-time PCR |
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Apr 18 |
comment |
What are the limitations to current nucleotide sequencing technologies? All or most of the limitations you describe can be simply overcome by brute force method. Almost any genome sequenced on any high throughput technology today will be of very high quality if you sequence it 100 times. It's just a matter of time and money. Remember the original human genome was sequenced by many Sanger machines and a lot of cloning. |
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Apr 18 |
comment |
What exactly are computers used for in DNA sequencing? It's not the sequencing itself that is computationally particularly intensive, but the assembly of the sequenced fragments into continuous DNA. Also, even a computationally trivial task will take time if repeated billions and billions of times. To get any decent quality sequence, one has to sequence the DNA multiple times (20+). If you have a genome that's 3 billion bases long... |
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Apr 18 |
answered | Fish “coming back to life” after being frozen |
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Apr 17 |
comment |
Can species back-evolve? @myself The above blind fish example assumes that the mutations in genes A and B are recessive (only one correct copy of the gene is necessary for correct function) |
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Apr 17 |
answered | What's the aim of genetically modifying of foods/organisms? |
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Apr 17 |
awarded | Teacher |
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Apr 17 |
answered | Can species back-evolve? |
