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EvC Forum ⇒ Science Forums ⇒ Biological Evolution ⇒

Fossils - Exposing the Evolutionist slight-of-hand

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Author Topic:   Fossils - Exposing the Evolutionist slight-of-hand
Coragyps
Member (Idle past 764 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002

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Message 60 of 90 (50128)
08-12-2003 10:54 AM 		Reply to: Message 59 by Quetzal
08-12-2003 7:46 AM

Re: Little Help with a personal debate, please?
Why was there a rapid radiation of shelly fauna?
I read something (but where I don't know....) in the last few months that also pointed toward a major upset in ocean water chemistry around that time - calcium carbonate solubility declined, allowing shells to be more stable. It would have to be a pH and/or bicarbonate level thing, but all I have is a vague recollection...I hate it when I do that.
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Coragyps
Member (Idle past 764 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002

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Message 71 of 90 (50224)
08-12-2003 5:33 PM 		Reply to: Message 70 by MisterOpus1
08-12-2003 5:20 PM

Cassette mutagenesis experiments
show that proteins can tolerate amino acid substitutions at one or two sites, but more than that usually results in loss of function.
Cytochrome c differs by 10 amino acids, IIRC, between humans and horses, and by 30+ between humans and yeast. It functions in all of those. Hemoglobin is pretty variable too, methinks.
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