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::Evolution has been a '''long''' road.  It's taken 4 billion years for gene duplication, sequence divergence, random catastrophes, population events, and the cut-throat race for reproductive viability to lead to life as we know it today.
 
::Evolution has been a '''long''' road.  It's taken 4 billion years for gene duplication, sequence divergence, random catastrophes, population events, and the cut-throat race for reproductive viability to lead to life as we know it today.
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::::[[Hardy Weinberg equilibrium]] is a model for what the genes of a living thing would be if they did not evolve. In this model, forces that change genetic frequency, such as mutations, genetic recombination, and so on, would have no effect. This concretely means that if a population has Hardy Weinberg equilibrium, and if, say, fifty percent of the individuals having one allele (alleles are versions of a gene) and fifty percent has another, then over, say, a thousand generations, fifty percent would still have one allele and fifty percent the other.
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::::Experiments testing whether this equilibrium exists have been conducted for decades, and the result is that the frequency of alleles in a population change from generation to generation, and they change tremendously over large spans of time because mutations, genetic recombination, genetic drift, and other factors all make tiny changes in genes in individuals.
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::::That withstanding, when individuals in a species pass their genes from generation to generation, it's easily to fathom that tiny observeable changes in alleles mean observeable changes in species over massive spans of time. [[User:PabloAbra|PabloAbra]] 18:15, 9 February 2012 (EST)
    
===What a creationist would reply===
 
===What a creationist would reply===
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