1,575 reputation
59
bio website vyznev.net
location Helsinki, Finland
age
visits member for 2 years, 4 months
seen Apr 20 at 21:50

I like programming in Perl and C. I know Java and PHP too (I'm a MediaWiki developer), but I can't really say I like them. I keep meaning to learn Python some day, but never seem to get around to it.

I'm working on a Ph.D. in biomathematics. I also like programming puzzles and cryptography.

Please consider any (original) code I post to Stack Overflow (and other Stack Exchange sites) to be released under CC-Zero unless stated otherwise. You may do whatever you want with it and don't have to credit me in any way, although of course that would be nice.


Mar
21
comment How do I calculate the change in allele frequency in a haploid population under selection?
Ps. As a mathematician, I'd like to register my objection to using the notation $\frac{dx}{dt}$ for "allele frequency change per generation"; it properly denotes the rate of allele frequency change over time (presumably in a continuously breeding population, for such a rate to be well defined). Even if we measure time in (average) generations, it's not hard to come up with examples where the two are not equal.
Mar
21
comment How do I calculate the change in allele frequency in a haploid population under selection?
Here's a simple consistency check to show that $\Delta x = \frac{x}{1-sy}$ can't possibly be the right answer: in a pure monomorphic $A_1$ population, there obviously cannot be any change in allele frequencies through selection, so $x = 1$ should imply $\Delta x = 0$. Your formula, however, yields $\Delta x = \frac11 = 1$ in that case.
Mar
13
answered Is Natural Selection like a Copy Editor?
Mar
13
comment Is Natural Selection like a Copy Editor?
I know, I'm just saying that the only reasonable answer is, put briefly, "In some ways it is, and in some ways it isn't." It doesn't really help that the "statement" you're asked to evaluate is really two statements, and they're not really equivalent. (Copy editors don't just "work only with what is already present," at least not in the same sense as natural selection does.) Sorry if that seems unhelpful, but that's how I see it.
Mar
13
comment Is Natural Selection like a Copy Editor?
Is a railway car like a weasel? Honestly, I don't think it's a very good question. I hope it at least doesn't ask for a yes-or-no answer.
Mar
13
comment Is Natural Selection like a Copy Editor?
If I had to compare natural selection to a job in the publishing industry, I'd say it's more like a commissioning editor -- that is, the guy who decides what to accept and what to throw in the garbage bin.
Mar
12
comment How would constantly growing nails have aided early human?
An interesting theory, but I'm not sure how it can explain the fact that all great apes have essentially human-type nails, as do most other primates. While some primates are indeed more or less monogamous, many are not; this includes our closest evolutionary relatives, the chimpanzees and bonobos, which nonetheless have very human-like nail morphology.
Mar
12
answered Why ducklings are yellow?
Mar
12
answered How would constantly growing nails have aided early human?
Mar
12
comment How would constantly growing nails have aided early human?
I don't think this is a very good answer. It sounds like you're arguing that the constant growth of human nails is just a useless vestigial trait. Yet the change from claws to flat nails in our evolutionary history is a non-trivial one, and must surely have involved some considerable selection pressure. Had it been advantageous at the time for our nails not to grow during adulthood (or at all!), that, being a comparatively minor change, surely could've evolved as well.
Dec
24
awarded  Yearling
Aug
25
awarded  Good Answer
Dec
24
awarded  Yearling
Sep
28
comment What causes the characteristic 'gleam' in the eye of a living being?
+1 for "dead people don't blink."
Sep
12
answered Is DNA mutation locally energetically stabilizing the DNA molecule
Aug
31
comment Short-term Lamarckism in asexual single cell organisms
@KonradRudolph: Looks like you've more or less answered the question; would you mind turning your comments into an actual answer?
Aug
11
revised Why would diffusion be faster across a non-specialised tissue?
the tissue is called "mucous membrane" or "mucosa", "mucus" is the stuff it secretes
Aug
5
awarded  Good Answer
Aug
2
awarded  Nice Answer
Aug
1
answered Is the theory of evolution being disproved by bats?