Answer:
An operon is a region of RNA that consists of the coding regions of more than one gene.
Explanation:
Operons are clusters of genes that share the same promoter and are transcribed as a single large mRNA that contains multiple structural genes or cistrons.
 
        
             
        
        
        
Its important because it produces the make gameotophyte called pollen.
        
             
        
        
        
The answer is a gene.
During an embryogenesis, cells divide to form tissues and organs. In some moment, a mutation could occur in a gene in some cell. The copies of those genes molecules will be mutant copies and will be present only in that cell line. That is why pigment is absent only in specific places.
        
                    
             
        
        
        
No they are not because they don’t contain chlorophyll which is the organelle that is in charge of the process.