function mutate(genome)
        for mutation,rate in pairs(genome.mutationRates) do
                if math.random(1,2) == 1 then
                        genome.mutationRates[mutation] = 0.95*rate
                else
                        genome.mutationRates[mutation] = 1.05263*rate
                end
        end
 
        if math.random() < genome.mutationRates["connections"] then
                pointMutate(genome)
        end
       
        local p = genome.mutationRates["link"]
        while p > 0 do
                if math.random() < p then
                        linkMutate(genome, false)
                end
                p = p - 1
        end
 
        p = genome.mutationRates["bias"]
        while p > 0 do
                if math.random() < p then
                        linkMutate(genome, true)
                end
                p = p - 1
        end
       
        p = genome.mutationRates["node"]
        while p > 0 do
                if math.random() < p then
                        nodeMutate(genome)
                end
                p = p - 1
        end
       
        p = genome.mutationRates["enable"]
        while p > 0 do
                if math.random() < p then
                        enableDisableMutate(genome, true)
                end
                p = p - 1
        end
 
        p = genome.mutationRates["disable"]
        while p > 0 do
                if math.random() < p then
                        enableDisableMutate(genome, false)
                end
                p = p - 1
        end
end


Yours:

function mutate(genome) 
   for mutation,rate in pairs(genome.mutationRates) do 
      if math.random(1,2) == 1 then 
         genome.mutationRates[mutation] = 0.95*rate 
      else 
         genome.mutationRates[mutation] = 1.05263*rate 
      end 
   end 

   if math.random() <genome> 0 do 
      if math.random() <p> 0 do 
      if math.random() <p> 0 do 
      if math.random() <p> 0 do 
      if math.random() <p> 0 do 
      if math.random() < p then 
         enableDisableMutate(genome, false) 
      end 
      p = p - 1 
   end 
end