111 reputation
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bio website andriy.drozdyuk.com
location New Brunswick, Canada
age 30
visits member for 1 year, 9 months
seen Oct 7 '12 at 5:19

I like python, Scala, Haskell.
Did my undergrad in computer science at UofT.
Working as a developer at NRC and doing master's part time at UNB.


Oct
7
comment Biology view on trait variability
In fact, I can't find what Costa is saying in Darwin's words, as it seems Darwin is saying complete opposite.
Oct
7
comment Biology view on trait variability
I cannot really clarify it as I don't really understand what the author means. I can, and will, include the original passage to which this side-note refers.
Oct
7
comment Biology view on trait variability
Directional selection sounds just like a regular natural selection to me. Perhaps I am missing some fine detail? Excuse my ignorance - I am just starting this subject!
Oct
7
comment Biology view on trait variability
Now that I've read about Disruptive Selection, I don't see how it impacts the argument. For once the selection is stabilized, it will tend to vary less. E.g. in the example of white/black rabbits - once the black color is chosen, it will vary very little compared to when the rabbits were initially specialized from, say, previous-rabbit-species, which were, for example of green color. Nor is there anything in Drawin's theory to suggest that simultaneous "genes" cannot exists in species at the same time, if selection deems them useless.
Oct
7
comment Biology view on trait variability
But that has little to do with the actual theory, which is trying to explain the "general principles" of things. The events such as catastrophe will in a sense "revert" things back to an earlier time, after which the quickening of variability will commence. BUT it will still tend to slow down, eventually, and vary to a lesser degree, again satisfying the theory. N.B.: I haven't read about the Disruptive Selection or Directional Selection yet, so I am only talking about your latest point here. Thank you and excuse me!