Can you please post option too
        
             
        
        
        
I'm not sure how exactly you wanted this question to be answered. You're either talking about the symmetry where animals would have two legs or two arms for example and thus producing a pair of each muscle on both sides of the body, or you're refering to the development of agonistic and antaonistic muscles where each of them served a different purpose; either extending or contracting. 
        
             
        
        
        
You can conclude that the father was either heterozygous for that trait or fully homozygous.  
        
             
        
        
        
The following answer to the equation is landslides
        
                    
             
        
        
        
Hey, how are you doing?
The answer to your question would be: 

 i believe. 
Hope this helps, and if you need further help, contact me!
Thank you,
Darian D.