The answer your looking for is B different patterns of gene expression
        
             
        
        
        
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OK I can do it and tell u afterwords 
 
        
             
        
        
        
Answer:
In prophase, the nucleolus disappears and chromosomes condense and become visible. In prometaphase, kinetochores appear at the centromeres and mitotic spindle microtubules attach to kinetochores. In metaphase, chromosomes are lined up and each sister chromatid is attached to a spindle fiber.
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