diff --git a/hamazaki1990/individual.py b/hamazaki1990/individual.py
index c46a3d7..e4bd463 100644
--- a/hamazaki1990/individual.py
+++ b/hamazaki1990/individual.py
@@ -12,16 +12,18 @@ def get_fitness(self):
     def __repr__(self):
         return str(self._id)
 
+    def is_not_fixed(self):
+        for x in range(1, len(self._inds)):
+            if self._inds[0] != self._inds[x]:
+                return True
+        else:
+            return False
+
 
 def main():
     ind = Individual(42)
     print(ind.get_id())
     print(ind.get_fitness())
 
-    ind2 = Individual(30, 0.8)
-    print(ind2.get_id())
-    print(ind2.get_fitness())
-
-
 if __name__ == '__main__':
     main()
diff --git a/hamazaki1990/visualize.py b/hamazaki1990/visualize.py
new file mode 100644
index 0000000..75a427e
--- /dev/null
+++ b/hamazaki1990/visualize.py
@@ -0,0 +1,38 @@
+import pandas as pd
+from population import Population
+
+
+def calculate_ave(seq):
+    return sum(seq)/len(seq)
+
+
+def calculate_var(seq):
+    ave = calculate_ave(seq)
+    sqd = [(seq[x] - ave)**2 for x in range(len(seq))]
+    return sum(sqd)/len(seq)
+
+
+def change_allelewf(Population):  # simulate fixation in Wrigft-Fisher model
+    time = 0
+    while Population.is_not_fixed():
+        Population.next_genwf()
+        Population.print_ids()
+        time += 1
+    else:
+        winner_id = Population._inds[0]
+        return time, winner_id
+
+
+def simulate_fixmo(Population):   # simulate fixation in Moran model
+    time = 0
+    while Population.is_not_fixed():
+        Population.next_genmo()
+        time += 1
+    else:
+        winner_id = Population._inds[0]
+        return time, winner_id
+
+
+p1 = Population(10)
+data = list(change_allelewf(p1))
+data.to_csv()