turbonium, on 02 November 2009 - 04:48 AM, said:
No, I simply didn't have the time to respond to it, until now.
It can essentially be summed up in your own comments...
"That is a whole lot of 'what ifs' and 'hypothetical'". And I say I know! Winning the lottery is also a big what-if, a big hypothetical, but the lottery is a process and when viewed as such it is inevitable that someone is going to win."
What does it say for your argument, when you've already conceded that it has as much chance of occurring as winning the lottery?
And that's just your odds of any chromosomal fusion occurring. You haven't even considered that this "fusion event" must also create a more advanced species.
In other words, your argument is "anything is possible over millions/billions of years". Evolution Theory uses that excuse all the time.
You obviously didn't really read and digest what I wrote and simply skimmed for something to "use" against me. That portion you copied and pasted above was referring to made up example I was using.
As I pointed out numerous times in the posts--Those kinds of translocations do happen and happen often. Robertsonian translocations (just one process responsible for chromosome number change) happens 1 in every 1000 births. That certainly seems like "long odds" to happen to you as an individual, but consider in the US alone there are
5 million babies born every year (give or take a few hundred thousand).
So you didn't understand that point about "and that's just your odds of
any chromosomal fusion occurring."
Next you claim;
Quote
You haven't even considered that this "fusion event" must also create a more advanced species.
Which thoroughly reiterates your lack of understanding regarding evolution. I am not sure at this juncture how you can take your own self seriously with these posts. Surely you must be starting to realize how ill-informed you are?
Anyway, evolution isn't about creating more "advanced" species. Evolution isn't about trying to create anything, it's simply a reaction to competition and a changing environment.
Consider a small breeding population (such as geographically isolated types of pre genus homo which occurred in the African savannas) in which a balanced Robertsonian translocation arose, let's say 500 adult breeding sub-population.
On drift alone such a balanced translocation could become quickly fixed in population. For example, I ran a simulation regarding genetic drift and such a event, with 500 individual population and occurrence of 1 in a 1000 or .001 for a frequency. Based upon chance alone, no selection that is to say, you can see the trait become fixed in as long as (though this is still quick across geological time) 467 generations (roughly 10,000 years);
To fixations occurring very quickly like 74 (I believe the lowest I got was 12 generations)-Roughly 1500 years:
Again, this is based on purely chance alone and a small isolated sub-population. If such a translocation introduced even a mild selection factor, one in which say carriers achieved a relative fitness of 1 and non-carriers of .9 (a very close relative fitness), you can see how quickly selection will fix the trait;
This also isn't even beginning to consider the reproductive factors of balanced individuals mating more successfully with other balanced individuals as opposed to non-carriers. When you start factoring such things in, we are talking possibly fixating in a few centuries.
So as to your final statement;
Quote
In other words, your argument is "anything is possible over millions/billions of years". Evolution Theory uses that excuse all the time.
I am not using any such argument. Like we have seen in mice and other wild animal species fixation of a translocation that incurs a selective advantage would have very quickly (geologically speaking).
What's your excuse for failing to assimilate this information? Since of the two of us, only one seems to be using 'excuses'.
Edit: Apologies the population simulation software I used is
Populus one of the many tools of population biologists. Available at the link for free.
This post has been edited by Copasetic: 02 November 2009 - 03:06 PM