Alleles
I had bio a while ago though so I could be wrong...
        
                    
             
        
        
        
Lipids are NOT made of nucleotides. Nucleotides are the building block for nucleic acid, if that answers your question. 
 
        
             
        
        
        
Answer:
option B. cohesion..........tree.
 
        
             
        
        
        
These animals were preyed upon by equally large carnivores such as saber toothed cats, cave bears and dire wolves.
Btw it's (QUATERNARY) *  
 
        
                    
             
        
        
        
Answer: is accomplished by DNA polymerase.
Explanation: DNA polymerase is an enzyme that catalyzes the synthesis of a complementary strand of a DNA molecule during replication. The double stranded DNA helix is first unwind by the enzyme known as helicase giving rise to two DNA strands which serve as templates for replication. DNA polymerase then binds to a primer, a short nucleotide sequence and catalyzes the attachment of nucleotides to the primer to form a growing strand that is complementary to the parent DNA.