Answer:
B: They have half the normal amount of genes
Explanation:
 
        
                    
             
        
        
        
4 because the distance is 40 and it hit the ground in 5 seconds
        
             
        
        
        
Answer:
There are histones in the nucleus that DNA coils around. The part of the DNA that is coiled around the histones is not accessible, and cannot be expressed in that cell. DNA that is not wrapped around a histone can be transcribed.
Explanation:
 
        
             
        
        
        
In my opinion, the correct answer among the choice given above is option D. It is advantageous for grazing mammals to gather in groups because groups <span>offer greater protection from predation. It protects them  because predators will think twice in nearing the group because it is outnumbered.</span>