Although the DNA packaging with histones proteins is mean to form nucleosomes (groups of 8 histones proteins), the higher structures why the genetic material is packaged with those molecules is to form chromosomes, as you said.
 
        
             
        
        
        
<span>Remember that of the three Domains, only Eukaryota have multicellular organisms. AllEukaryotes have (or are) complex cells. Plantae, Animalia and Fungi are truemulticellular kingdoms. The various other Eukaryotic kingdoms are lumped under Protists. Hope this helps</span>
        
             
        
        
        
The result which would be seen from a properly prepared negative control is nothing.
<h3>What is a Negative control?</h3>
This type of control  is used to test and ensure that in the absence of the antigen we do not still get a positive reaction.
Since proper aseptic technique was practised and there was no swabbing of the surface then there would be nothing seen in the properly prepared negative control.
Read more about Negative control here brainly.com/question/7452004
 
        
                    
             
        
        
        
I am pretty sure the answer is a