I believe it's oxygenated or oxygen rich blood away from the heart.
        
                    
             
        
        
        
<span>A point mutation that results in the substitution of one amino acid for another within a protein is a missense mutation. 
</span>This type of mutation<span> is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a </span>gene<span>. </span>
        
             
        
        
        
In the nucleus of a cell.