Answer: DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.
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The first one is to absorb calcium. 
second question: I THINK poor wound healing
        
                    
             
        
        
        
Answer:
As pressure increases, volume of an object tends to decrease.
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Answer:
Yes they can.
Explanation:
I defined the genotypes and possible outcomes in the image attached