My problem with evolution is that any mutation is a LOSS of genetic code. You cannot add genetic code during the course of a mutation. So how is it that after millions of years we somehow added all this genetic code via evolution to become humans rather than amoeba?
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They're called "insertions" for a reason, duuuuh...
Edit :could suggest looking up the term "transposon", too, but I kinda doubt it that you'll understand more than ten words altogether.
Errrr...a biologist I'm not, but isn't mutation funny combinations of existing genetic code? Aside from compensation for free radicals, and other external forces, isn't a mutation usually from an oops in the division of the sex cells? If it's not, please correct me...this has always fascinated me.
GigaGuess/does usually come from an oopsy in the sex cells.
PS: I am also not an expert, so you might want to look it up from somewhere more reliable.
David B. wrote:
"2. Even single point mutations are not a 'loss' of genetic code, you have just as much 'code' afterwards as before. It just is quite likely that it does something slightly different (like make a cell membrane that doesn't disintegrate in the presence of antibiotics).
http://www.jbc.org/cgi/content/abstract/271/26/15393 "
wall , not the cell membrane, since cell walls are the main area where bacteria and eukaryotic cells differ. (A substance that attacked cell membranes would be just as harmful to human cells as it would to bacteria!)
Or is the particular antibiotic in the above paper one that attacks a specific site on bacterial cell membranes that eukaryotic cell membranes lack?
Base pair changes are generally a net even as far as information goes. Information can be lost, but it can also be corrupted -- my mother's family suffers from Huntington's Disease, where a transcription error created a stutter in one protein coding that has brutal effects on the nervous system. (I'm adopted, so I'm not worried about HD, but I do wonder what else I have to be afraid of.)
Genes and parts of genes get copied more than once during replication with some frequency. Sometimes new genes get inserted or shuffled around via transposons. Point mutations can occur in any part of a gene.
All of these add information by any definition you care to use. The organism still functions in most cases. Information is only deleted in the case of a deletion mutation.
Try again.
The only reason that mutations are a loss of genetic code is because someone as clueless as you told you that they are.
Incidently evolution has been occuring for billions, not millions, of years. That kind of makes a difference, asshat.
Your first statement is completely false. There are many different types of mutation, resulting in duplications, deletions, replacements, transpositions, etc, etc. Also, more complex organisms do not necessarily have more DNA.
In conclusion, shut the fuck up when you don't know what you're talking about.
I have no university education in Biology, so I don't know for sure, but I clearly have much more education than you, parasite. Mutation is a CHANGE of genetic code. Sometimes it's added information, sometimes it's reduced information, sometimes it’s the same amount but different info.
It is exactly through evolution (random mutation and natural selection) that after millions of years we have changed all this genetic code to become humans rather than amoebas. Evolution IS the “how”.
Confused?
So were we! You can find all of this, and more, on Fundies Say the Darndest Things!
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