A - the spindle from the kinetochores that attaches to the chrs and pulls them towards the poles is a microfilament.
 
        
                    
             
        
        
        
The muscle elevates and/or adducts a region.
        
             
        
        
        
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. ... A trait is any gene-determined characteristic and is often determined by more than one gene.