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NATURAL genetic changes can only account for diversity within a species.  Mendellian genetics has demonstrated the existence of a closed field of genetic changes which can occur through the reproductive process.
 
NATURAL genetic changes can only account for diversity within a species.  Mendellian genetics has demonstrated the existence of a closed field of genetic changes which can occur through the reproductive process.
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#*'''Counter:''' Mendel's findings were incomplete, and were ignorant of certain structures such as chromosomes, or processes such as mutation.  The latter presents a perfectly viable way for an organism to receive genetic code not present in its parents.--[[User:Άθεος|Άθεος]] 21:23, 11 April 2007 (EDT)
    
#*#The speed of evolution is measured by the [[w:Darwin (unit)|darwin]] (change in an organism's character by a factor of e per million years.) [http://www.talkorigins.org/faqs/comdesc/section5.html#morphological_rates]  
 
#*#The speed of evolution is measured by the [[w:Darwin (unit)|darwin]] (change in an organism's character by a factor of e per million years.) [http://www.talkorigins.org/faqs/comdesc/section5.html#morphological_rates]  
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