A Neurospora strain that requires glutamic acid (glu) for growth
was mated to s train that requires leucine (leu) for growth. The
cross produces the following progeny (total=100):

glu    leu    glu  
+        glu   
leu    glu  
leu        glu  
leu        glu
+         +  
leu

glu    leu    
glu   +       
glu   +        
+     leu   
+     
+                
+    leu       
+      +

+      + +    
leu       
+    
leu        glu   
+        
glu    leu    glu
+        glu   leu

+      + +    
leu       
+    
+       
+      
+        
+     
+        
+     leu    glu  
+

———       
———-    ———-   
———–    ———–   
———-    ———

    1 40
15            
9            
1                
26            
8

1, How far is glutamic acid from its centromere?

A.13.0        B.
3.5        C.
10.5        D.
15.5        E. 18.0

2, How far is glutamic acid from its centromere?

A.25.0        B.
22.5        C.
11.0        D.
20.5        E. 16.0

3, What is the map distance between glutamic acid and
leucine?

A.38.0        B. genes are
not linked    C.
10.5        D.
18.0        E. 21.5