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porkchop

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So what are the top three "facts" that prove evolution for you, that "sealed the deal" ?



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He who assumes he has gained the world merely through his 5 senses and who loses faith, loses all
 


Posts: 434 | Posted: 8:48 PM on January 7, 2010 | IP
firechild

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I don't think for anyone that is convinced of evolution it can be defined by 3 key facts. It is a combination of masses of data. The devlopment of the human (and other animals) foetus is very strong evidence. Fossil records correlating with various dating methods as well as theorised environmental conditions. DNA evidence is very strong and includes masses of different pieces of evidence.
 


Posts: 86 | Posted: 9:06 PM on January 7, 2010 | IP
Demon38

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So what are the top three "facts" that prove evolution for you, that "sealed the deal" ?

The fact that life chnages, that new species arise from old species is an observed phenomenon.  Evolution is a fact.  and the fact of evolution is explained by the theory of evolution.  From here:
Macroevolution

"In 1988, scientists at Michigan State University created twelve population lines of E. coli so that they could watch them evolve.  Since then, the bacteria have been growing under carefully controlled conditions in a culture containing low concentrations of glucose and high concentrations of citrate.  Under oxic conditions (that is, when oxygen is present), E. coli cannot grow on citrate and “that inability has long been viewed as a defining characteristic of this important, diverse, and widespread species.”  Many traits were observed changing over time. Creationists dismissed these changes as micro-evolution.  For over 30,000 generations, the E. coli in the experiment did not evolve the ability to grow on citrate. Finally, one of the populations evolved, and gained this ability.

Each population experienced billions of mutations in the first 30,000 generations. Since every possible point mutation was tried many times, scientists were either looking at a rare mutation (such as a large piece of DNA inverting) or a mutation made possible by the cumulative mutation history of prior generations.  If this was just a rare mutation, then a sample of bacteria taken just before the trait first appeared would be no more likely to evolve the trait again than a sample taken from the other populations at the same point in time.  However, if the ability to use citrate was from an accumulation of “micro-evolutionary” changes, then a sample from earlier generations of the E. coli would be able to evolve the ability to use citrate again.

Fortunately, the scientists had frozen samples of each population every 500 generations.  Sure enough, when they revived earlier samples, they watched the citrate-growing ability evolve in the “micro-evolutionary” line, but not from samples taken from other lines.

We know that in one population, a series of changes that happened between the 15,000th and 20,000th generations laid the groundwork for a major evolutionary advance. Here we have a clear example of macro-evolution under carefully controlled laboratory conditions."

Macroevolution is an observed process.


 


Posts: 1664 | Posted: 9:12 PM on January 7, 2010 | IP
orion

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Quote from porkchop at 8:48 PM on January 7, 2010 :
So what are the top three "facts" that prove evolution for you, that "sealed the deal" ?




Fact #1:
Fossil record - examination of the fossil record shows that there is a definite pattern as predicted by ToE.  There was a progression as evolution built upon what came before.  The fossils are also laid down in a specific order.  To this day there have never been any 'out-of-date'/'out-of-place' fossils found.  You don't see any fish fossils during the time of single-celled bacteria/eukaryotes.  You don't see dinosaurs in Devonian rock.  You don't see any human fossils mixed up with dinosaur fossils.  IF you did find out-of-date fossils, that would put a BIG dent in ToE.  However, no out-of-order fossils have ever been found.

Fact #2:
DNA - the perfect vehicle for driving evolution.  Mutations occur upon which natural selection draws upon.  Examinination of genomes show the relationship between the diverse life forms that we see today.  These relationships follow a 'tree of life', and fits right in with ToE.  DNA was the unknown element behind Darwin's tenets of Natural Selection and Common Descent.  It fit into Darwin's ideas perfectly.  We see Natural Selection happening today.  Evolution in action, so to speak.

Fact #3:
Embryology - we can also see the similarity in development of different species through embryological development.  Also, experiments on embryos show how changes in genes (ie; such as regulatory genes) can lead to evolutionary development - such as the development of fins and limbs from the same type of genes.

(Edited by orion 1/7/2010 at 9:44 PM).
 


Posts: 1460 | Posted: 9:42 PM on January 7, 2010 | IP
wisp

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For one second i thought he started a thread where he would post the facts that support his position (whatever that might be, for he doesn't say).

I should have known better...

Ok, i will answer, as if it made any difference.

Three facts that support the Theory of Evolution:

1) Evolution.

2) Clades (the tree of life, demonstrated by genetics, morphology, the fossil record and biogeography).

3) Geological dates.

Demon
Fortunately, the scientists had frozen samples of each population every 500 generations.  Sure enough, when they revived earlier samples, they watched the citrate-growing ability evolve in the “micro-evolutionary” line, but not from samples taken from other lines.

We know that in one population, a series of changes that happened between the 15,000th and 20,000th generations laid the groundwork for a major evolutionary advance. Here we have a clear example of macro-evolution under carefully controlled laboratory conditions.
Woah! I didn't know that part! How very interesting!



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Quote from Lester10 at 2:51 PM on September 21, 2010 in the thread
Scientists assert (by Lester):

Ha Ha. (...) I've told you people endlessly about my evidence but you don't want to show me yours - you just assert.
porkchop
Would we see a mammal by the water's edge "suddenly" start breathing underwater(w/camera effect of course)?
Contact me at youdebate.1wr@gishpuppy.com
 


Posts: 3037 | Posted: 12:56 AM on January 8, 2010 | IP
    
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