A is the answer ur welcome for helping u
        
                    
             
        
        
        
Without backbone or having no backbone is considered as INVERTEBRATES. 
hope its help...
--kcirejay:♥)
        
                    
             
        
        
        
Answer:
I think the answer Is divide the cell in half and see the explanation 
Explanation:
Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis
 
        
             
        
        
        
A trait is the organism's feature. So, a trait would be eye color. A phenotype would be hazel. An allele is a gene. It can be recessive or dominant.
        
                    
             
        
        
        
The answer to this question might be protein.