When it is said that mutation is the ultimate source of genetic variation it means that it creates several new combinations which is similar to  meiosis and fertilization because <span> new alleles and genes appear. It is just about some common points.</span>
        
             
        
        
        
Answer:
Please see my answer below.
If you like my response you can mark it as brainliest.
If you have any doubts (no joke) you can reach out to me in the comments.
Explanation:
<em><u>The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes. Mitochondria and chloroplasts are the same size as prokaryotic cells and divide by binary fission. Mitochondria and chloroplasts have their own DNA which is circular, not linear.</u></em>
 
        
             
        
        
        
Spontaneous mutations in the bacterias DNA
 
        
             
        
        
        
No, since it is an island separate from the mainland Ecuador and has been uniquely isolated over the past several hundred thousand years, the species on the Galapagos Islands have had time to evolve differently and separately than those in Ecuador, leading to many different, diverse species on the Galapagos that don't exist in Ecuador