Mutation is the only evolutionary mechanism that does little to change allele frequencies.
        
                    
             
        
        
        
I’d go with C hope it helps
        
             
        
        
        
Answer: Meristems contribute to both primary (taller/longer) and secondary (wider) growth. Explanation: Primary growth is controlled by root apical meristems or shoot apical meristems, while secondary growth is controlled by the two lateral meristems, called the vascular cambium and the cork cambium.
Explanation:
 
        
             
        
        
        
I'm not sure what you're asking, but if you're looking for a word to describe this change its "mutation" 
        
             
        
        
        
<span>If an island had 1000 cats on it, an ecologist would use the word 'population' to describe all the members of that species</span>