Answer:
Expecting that the skeletal muscles of frog is like human beings (as they are vertebrates). The end drawn from this supposition that will be that the A band (thick fiber) stays unaltered in any event, during compression and the I band (flimsy fiber) contracts. So from the given data following outcomes are acquired;  
A band before = [2.0um]  
I band before = [2.0um]  
A band after = [2.0um]  
I band after = [1.0um]
 
        
             
        
        
        
Grams would be the correct answer hope this helps!
        
             
        
        
        
4. DNA sequence comparison
5. Random mutations 
        
             
        
        
        
Answer: O many celled organisms
Explanation: