The Instigator
GKING14
Pro (for)
Tied
0 Points
The Contender
11001
Con (against)
Tied
0 Points

Evolution: A Scientific Fact

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Voting Style: Open Point System: 7 Point
Started: 6/23/2014 Category: Science
Updated: 2 years ago Status: Post Voting Period
Viewed: 510 times Debate No: 57027
Debate Rounds (4)
Comments (2)
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GKING14

Pro

Hello fellow debaters! Today I will be opening a debate that is always raging on despite the clear evidence. I will be arguing that evolution is indeed a scientific fact, that it occurs in nature, and is verifiable in both experiment and observation.

The rounds will proceed as follows:
1. Acceptance
2. Opening Arguments
3. Rebuttal Arguments
4. Closing Arguments

Good luck to whomever wishes to accept this challenge. I look forward to a robust and enriching debate.
11001

Con

I'm pleased to find such a juicy debate to do for my first day. I wish you good luck.
Debate Round No. 1
GKING14

Pro

Thank you for accepting this debate. Let's begin! All of my sources will be linked at the bottom of the page.
  • Occurrences In Nature:In 1859 when Charles Darwin wrote The Origin of Species, he launched a scientific field that would become incredibly vast and widely studied by many acclaimed scientists. Evolutionary Biologists have been working together with Archaeologists, Geologists, Chemists, and many other scientists over the last 155 years to gather as much evidence for the evolutionary process as possible. Here are only some of the natural instances of evolution by natural selection, genetic drift, mutation, etc...
    • Instances of mutation/natural selection: A species of fly known as Ormia ochracea migrated to the Hawaiian island of Kauai a short time ago. The flies are attracted to the chirping of the crickets on the island and because of that they are able to track down crickets and deposit their maggot offspring onto the backs of those crickets. The maggots then burrow into the back of the cricket and eat it from the inside out. The crickets luckily gained a mutation in their gene sequence that affected the wing shape of the male crickets. This disallowed them to chirp, which is what attracted the flies. A mutation that allowed the crickets to be eaten by the maggot offspring of flies on Kauai less often led to a more successful population. This is a strong case for mutation and natural selection working together to evolve a species. Other instances of natural selection include Peppered Moths in London[1] and Bacteria becoming resistant to antibiotics[2].
    • Instances of speciation/genetic differentiation: The Faroe Island House Mouse is a good example of speciation in nature. The mouse was brought the the Faroe Islands, which are made up of 18 different bodies, some connected, some not. Mice on the more remote, secluded islands, were found to exhibit much less genetic variation than mice on more connected islands. This is caused by the low mating capabilities of certain mice on certain islands. Eventually the mice that were once one species became so genetically different that they could no longer interbreed, thus we have an instance of speciation in nature. Other instances of speciation/genetic differentiation include the Eurasian Blackcap[3] and Cichlid fish[4].

Here is more evidence of evolution working through many of its' mechanisms to result in speciation with examples of Galapagos Finches and House Mice on the island of Madeira: http://users.rcn.com...

Here are several examples of speciation by experimentation... Scroll down to 5.0 to see the examples: http://users.rcn.com...


I believe I have provided the basis for what is a sound argument for the evidence of evolution by its' various mechanisms. Further detail will be included, if requested, after the rebuttals in my closing arguments. Many more examples could be shown here such as vestigial DNA/structures, but I believe this to be sufficient for now. The evidence I've provided exhibits mechanisms of evolution working together in both natural observation and experimental observation. All of these things lead to the confirmation of the Theory of Evolution, thus elevating it to the level of scientific fact just as they led other theories to become fact such as the Atomic Theory and the Theory of Gravity. I await the presentation of my opponents opening arguments. Thank you.

Sources:

Crickets: http://evolution.berkeley.edu...

Mice: http://www.setur.fo...

[1]: http://www.truthinscience.org.uk...

[2]: http://evolution.berkeley.edu...

[3]: http://whyevolutionistrue.wordpress.com...

[4]: http://evolution.berkeley.edu...

11001

Con

11001 forfeited this round.
Debate Round No. 2
GKING14

Pro

It would appear that my opponent has chosen to forfeit his opening argument round, thus leaving me with nothing to refute. Instead of using my rebuttal round for its intended purposes, I will provide more evidence for evolution. 11001 may use his last round for a rebuttal as well as his opening and closing arguments, because I am eager to hear his position on all of this.

Vestigial Structures

Vestigial structures, which can be organs, bones, and genetic information, are remnants of a species' common ancestors' genes. One example of this would be the structures of a pelvis and lower limbs in some whales[1]. Another example would be the goose bumps we get when we are cold or scared[2]. There are many more vestigial structures found in a vast number of species, including humans[3][4][5]

Unfortunately, this is where I must stop due to my being busy for the rest of today, but I think that in combination with my previous argument, evolution has a solid foundation to stand on. I am hoping that my opponent will at least give us his final post once I have posted this. Good day, fellow debaters.
11001

Con

11001 forfeited this round.
Debate Round No. 3
GKING14

Pro

GKING14 forfeited this round.
11001

Con

11001 forfeited this round.
Debate Round No. 4
2 comments have been posted on this debate. Showing 1 through 2 records.
Posted by GKING14 2 years ago
GKING14
Oops, forgot my sources on the last post. Here they are:
1: http://whyevolutionistrue.wordpress.com...
2,3,4,5: http://www.newscientist.com...
Posted by GKING14 2 years ago
GKING14
@11001: You've only got a little bit of time left to respond. Please do so :)
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