Carbon Dating - Looking for good articles

[CottonRabbit]

Originally posted by: ed21x


to address http://www.talkorigins.org/faqs/faq-speciation.html that everyone is listing:

The author lists 9 instances of plant hybridizations but besides the first one (and that one is kinda iffy), not a single one produced a reproductively isolated population from it's parent species or another group that originated from a common line. As for the animals, he did not give any examples where a species was produced that could not mate with its parent species or another group from the same line outside of behavioural sexual isolation, NOT whether it was biologically possible. Basically, not a single example was convincing... (imho)

now i'm not exactly clear on evolution, and this is the wrong thread to discuss it, but I appreciate if you guys read the article you post up/highlight what part of it convinces you that a clear case of speciation has been observed.

As has been said, the biological species concept has numerous flaws. With modern sequencing technology, the phylogenetic species concept is quite a bit more useful.

Also, please reread this passage, since you seemed unsatisfied with the plant examples.

5.1.1.4 Raphanobrassica The Russian cytologist Karpchenko (1927, 1928) crossed the radish, Raphanus sativus, with the cabbage, Brassica oleracea. Despite the fact that the plants were in different genera, he got a sterile hybrid. Some unreduced gametes were formed in the hybrids. This allowed for the production of seed. Plants grown from the seeds were interfertile with each other. They were not interfertile with either parental species.

Furthermore, why can't a behavioral barrier count towards speciation? Is behavior not a trait that can be selected upon by natural selection? Regardless of the barrier, the end result is the same, the two populations don't exchange genetic material with each other.

More classic examples of speciation in animals:

Salamanders
Journal publication on salamanders

warblers
Journal article on warblers
The first website is not particularly clear, but the warblers originated in the south and migrated east and west around Tibet. The populations eventually created a continuous ring around central Asia, meeting up once more in Siberia, but deforestation in China has created the gap in the ring you see today. So, the main point of comparison is between the red and blue populations, which no longer recognize each others' songs for mating, even though they originated from the same population in the south.

Edit: Added papers published in scientific journals, in case you feel random websites are biased.

 

[Farang]

I went on a carbon date once.. she told me I was too old! Hey, whoa, hey, I get no respect, no respect. I just flew in from Vegas, boy are my arms tired! Hey, whoa. Alright. Take my wife. . . please! Hey, alright, whoa whoa. I'll be here all week.

 

[Born2bwire]

Originally posted by: Nemesis 1
I hate to mention this but I will. Before the flood it is said that the Sun did not shine threw the mist of heaven . If its true . No direct sunshine would change the dating. Any change in the amount of radition recieved from the sun would scew the results.

We need to start compiling a list of his posts and circulating it as a newsletter, like The Onion.

 

[Eli]

I don't think you can dispute carbon dating... Or any other form of radioactive isotope dating.

It's just math, and math doesn't lie.