Mercator projection map <span />
        
                    
             
        
        
        
It has properties of the ordinal level of measurement and
the differences in the values of the variable have meaning. A value of zero in
the interval level of measurement does not mean the absence of the quantity.
Arithmetic operations such as addition and subtraction can be performed on
values of the variable is called interval. 
While nominal the values of the variables name, label or categorize. In
addition, the naming scheme does not allow values of the variables to be
arranged in a ranked or specific, order. 
 
        
             
        
        
        
I dont understand what is being asked
        
             
        
        
        
The right answer is E.
Uracil is a nitrogenous base (pyrimidine) specific for RNA. The nucleoide of uracil is called uridine and nucleotide is called uridine monophosphate or uridylate. In the DNA, there is thymine instead of uracil.
So if we mark the uracils, only the RNA will be marked. The DNA will not be given that there is no uracil in it.