Phenotype refers to the observable traits an organism has. An example is blue eyes, black hair.
        
             
        
        
        
I would say that the brain stem would automatically send a message to the muscular rib cage & your diagphragm to make them work harder.
Hope this helps :))
 
        
             
        
        
        
Answer:
here is the order 
Genetics 
Allele 
Hybrid then law of independent assortment 
Law of segregation 
 
        
             
        
        
        
Most likely a silent mutation. Silent mutations are mutations in DNA that do not have an observable effect on the organism's phenotype because the same amino acid is produced regardless of the change in the nucleotide sequence by the mutation.
        
             
        
        
        
Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope.