The folds of the mitochondria
        
             
        
        
        
Answer:
The organs- thymus, tonsil, appendix and spleen constructs the lymphatic organ system and the lymph nodule is the collection of small lymphoid tissue.
Explanation:
The most significant part of immune and vascular system is the Lymphatic system. This system is consisted of some organs, like- spleen, thymus, tonsil and appendix, mainly named as lymphatic organs. These organs contribute to the function of defend in the immune system.  
Lymph nodules, however, are the collective small lymphoid tissue. These nodules are found in the area that is exposed to microorganism and it helps in fighting them.  
 
        
             
        
        
        
Answer:
is B) lowercase
Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.
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Answer:
no. domain is the largest scale of measuring of life
 
        
                    
             
        
        
        
Answer:
Yes scientist will need to develop multiple treatments to control symptoms.
Explanation:
because if they only do one treatment it may not work for everyone because some people could be allergic to that one treatment that's why there are multiple treatments.