3 is the answer.  
Binary fission is a type of asexual reproduction and is the most common method of reproduction in prokaryotes. It may occur in some unicellular (single- celled) eukaryotes..
Eukaryotes use sexual recombination during reproduction to create or generate genetic variation and thus the resulting offspring will have a mixture of the parents' genetic characteristics. 
Prokaryotes on the other hand will simply produce clones of themeslves through binary fisson. After the process of replicating its own genetic material, the  prokaryote  simply divides into two daughter cells that are almost identical in size and that concludes the process.
        
             
        
        
        
Answer:
it's because of a pigment called cholorophyll present in leaves..
 
        
                    
             
        
        
        
Sinlge-celled organisms and soft, boneless animals. Back then organisms were single-celled and simple.
        
             
        
        
        
Answer:
It would be B
Explanation:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.