diff --git a/forestry_bees/helper.lua b/forestry_bees/helper.lua
index 1889c05..dcb1717 100644
--- a/forestry_bees/helper.lua
+++ b/forestry_bees/helper.lua
@@ -69,6 +69,7 @@ end
 local function mutation(type1,type2)
 	local out_table1 = {}
 	local out_table2 = {}
+  local mutation = {false, false}
 	--check every possible mutation to see if we may obtain it
 	if ( (not (forestry_bees.bee_mutations[type1] == nil)) and (not (forestry_bees.bee_mutations[type1][type2] == nil)) ) then
 		for out_type, chance in pairs(forestry_bees.bee_mutations[type1][type2]) do
@@ -86,14 +87,16 @@ local function mutation(type1,type2)
 	local output = final_gene(type1,type2)
 
 	if next(out_table1) then --if a mutation accurred in gene 1
+    mutation[1] = true
 		output[1] = out_table1[math.random(#out_table1)]
 	end
 	if next(out_table2) then --if a mutation accurred in gene 2
+    mutation[2] = true
 		output[2] = out_table2[math.random(#out_table2)]
 	end
 	--out_table is always non-empty, now we uniformally 
 	--sample from out_table to get the output gene
-	return output
+	return output, mutation
 end
 
 local function choose_genes(genes)
@@ -110,13 +113,27 @@ local function output_genes(mother_genes,father_genes)
 	local mother_chosen_genes = choose_genes(mother_genes)
 	local father_chosen_genes = choose_genes(father_genes)
   local genes = {}
+  
+  genes["type_gene"], is_mutated = mutation(mother_chosen_genes["type_gene"], father_chosen_genes["type_gene"])
+  
   for key,_ in pairs(mother_chosen_genes) do
-    if key == "type_gene" then
-      genes[key] = mutation(mother_chosen_genes[key], father_chosen_genes[key])
-    else
+    --if key == "type_gene" then
+    --  genes[key] = mutation(mother_chosen_genes[key], father_chosen_genes[key])
+    if not (key == "type_gene") then
       genes[key] = final_gene(mother_chosen_genes[key], father_chosen_genes[key])
     end
   end
+  --if a mutation occurred we change the corresponding genes to the base_genes of the mutated bee
+  if is_mutated[1] then
+      for key,value in pairs(forestry_bees.return_genes(genes["type_gene"][1])) do
+          genes[key][1] = value
+      end
+  end
+  if is_mutated[2] then
+      for key,value in pairs(forestry_bees.return_genes(genes["type_gene"][2])) do
+          genes[key][2] = value
+      end
+  end
   return genes
 end