Answer:
The answer is b) due to an excessive stimulation of smooth muscle in bronchioles. 
 
        
             
        
        
        
Answer:A, C, E . 
Explanation:
I just did it on USA testprep
 
        
             
        
        
        
Predicting the genotype<span> of </span>offspring<span>. There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.</span>
        
                    
             
        
        
        
Certain Protiens, amino acids form protiens
        
             
        
        
        
Answer:
B) a nonsense mutation; this is because a nonsense mutation results in the change of a regular amino acid codon into a stop codon, which ceases translation. This fits with the problem's description of the protein that causes the symptoms as too short, as translation is the process by which proteins/polypeptides are created. A missense mutation would not be the answer because it still codes for an amino acid, which would not shorten the protein. A duplication of the gene would probably just lengthen the protein or not affect its length at all.