Explanation:
hormones are transported through blood to the areas where they are needed 
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B. mixture in which its components retain their identity
        
                    
             
        
        
        
Answer: a. plasma membrame
Explanation:
it's not b becasue a cell wall is composed of many cells. c and d are compoments of a cell found within it. which leaves us with a. plasma membrame, the protective layer that seperated the cell with its outside environment. 
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Answer:
genotype ratio = 1AB:1BO
phenotype ratio = 1 type AB blood: 1 type B blood