The substance is called DNA.
        
             
        
        
        
Answer:
Explanation:
Analogy refers to traits or structures like body shapes, fins which evolved independently that are similar in organisms that are not related by the same common ancestor. For example dolphins and shark have similar body structures like fins but they are unrelated. Whale and shark too. Whales are mammals, sharks are fish.
Homology refers to traits or structures 
posses by organisms that are related by common ancestors. Example wolf and whales.....they are both mammals.
 
        
             
        
        
        
At a glance this one's confusing, I agree.
Genetic engineering has made it easier for forensic scientists to differentiate human DNA beyond simple blood sampling. This inevitable led to release of innocent accused prisoners.
        
                    
             
        
        
        
Answer: 4
Explanation:
The pairing of the third (3') base of the mRNA codon and the first (5') base of the tRNA anticodon are less constrained by base stacking.
 
        
             
        
        
        
Answer:
Is wood heavier than paper
Explanation:
This is the only question that can have a definite answer and not an opinionated response