Answer:
I would say the answer is D.
Explanation:
It makes the most sense.
 
        
                    
             
        
        
        
the basic unit of life is the cell
 
        
                    
             
        
        
        
Answer:
Its option D. All of the above. 
Explanation:
As all the facts and processes causes recycling of water
 
        
             
        
        
        
Answer:
The correct answer will be option-formation of heterochromatin
Explanation:
Methylation of DNA is the epigenetic mechanism which controls the expression of a gene by adding a methyl group to the cytosine bases in eukaryotic DNA.
The methylation of DNA converts the cytosine residues to the  5-methylcytosine catalysed by DNA methyltransferase enzyme. This results in the silencing of the gene and transcription get switched off.
Studies have shown that DNA methylation is involved in the formation and maintenance of the heterochromatin structure which is the condensed form of the chromatin in which transcription is switched off.
Thus, the formation of heterochromatin is the correct answer.
 
        
             
        
        
        
Answer:
.
Explanation:
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