Pages: 1 2 3 4 5 6 7 [8] :: one page |
|
Author |
Thread Statistics | Show CCP posts - 1 post(s) |
Kievan Arakyd
MarSec Industries STR8NGE BREW
55
|
Posted - 2012.07.17 21:11:00 -
[211] - Quote
Simi Kusoni wrote:Kievan Arakyd wrote: There are several different species concepts.
I generally use the term to describe the point at which one subset of a species loses the capacity to reproduce with another (or with an ancestor), this does not happen in a single generation.
What if a single species is separated by an obstacle, say a mountain range. Depending on the definition they could be 1 or 2 species.
http://evolution.berkeley.edu/evosite/evo101/VA1BioSpeciesConcept.shtml Got my Dust514 key... |
Simi Kusoni
HelloKittyFanclub
1497
|
Posted - 2012.07.17 21:12:00 -
[212] - Quote
FloppieTheBanjoClown wrote:Ezra Tair wrote:The only issue I see is evolution being propped up as fact when the fossil record does not support the theory behind it. If evolution was the result of millions of minor changes over a long stretch of time. You would expect to see millions of variations of humans and animals in the fossil record. Currently we have only found steps that require a leap of faith to connect as related to one another. http://en.wikipedia.org/wiki/Punctuated_equilibriumBasically, species experience long periods of stability with few apparent changes. Mate selection tyipcally favors same-ness, so most radical changes would be bred out as undesirable. Evolutionary change is driven by adaptation. Adaptation isn't necessary if you're well-suited for your environment. Sharks, for example, haven't had significant changes in hundreds of millions of years. Change happens fast because it MUST happen fast. (and by fast, I mean on the order of tens or hundreds of thousands of years, compared to potentially millions of years of "stasis") It honestly never occurred to me that evolution slowed down to that extent in the absence of significant selection pressures, I assume mate selection kept it going to some degree.
Thanks for the interesting read!
"I don't troll, I just give overly blunt responses that annoy people who are wrong but don't want to admit it. It's not my fault that people have sensitive feelings"-á-á-MXZF |
Mallak Azaria
331
|
Posted - 2012.07.17 21:12:00 -
[213] - Quote
Akirei Scytale wrote:If you want to make the world a better place, you have to learn to get along - not try to make everyone agree with you. Getting offended by something like this is pointless and just plain stupid. It accomplishes nothing.
Interestingly enough, countries with the highest ratio of atheists also have the lowest rates of crime. |
|
ISD TYPE40
ISD Community Communications Liaisons
5
|
Posted - 2012.07.17 21:12:00 -
[214] - Quote
I'm going to lock this thread now since it seems to have gone completely off topic.
ISD Type40 Ensign Community Communication Liaisons (CCLs) Interstellar Services Department |
|
|
|
|
Pages: 1 2 3 4 5 6 7 [8] :: one page |
First page | Previous page | Next page | Last page |