Amend of update to reader handling sequence (two commits up)

dnarbd/segmentmodel.py

@@ -2100,6 +2100,17 @@ class SegmentModel(ArbdModel):
             crossovers.append(tmp)
         return crossovers
 
+    def set_sequence(self, sequence, force=True):
+        if force:
+            self.strands[0].set_sequence(sequence)
+        else:
+            try:
+                self.strands[0].set_sequence(sequence)
+            except:
+                ...
+        for s in self.segments:
+            s.randomize_unset_sequence()
+
     def _generate_strands(self):
         self.strands = strands = []