Dura mater...............
 
        
                    
             
        
        
        
The sugar and phosphate portion of the nucleotides are found as segments of the rails on the DNA twisted ladder.
        
             
        
        
        
well according to my memory and one of the save the earth communities, the great white shark is almost extinct cause of pollution, and mainly poachers, lots of poachers for soup made of shark fins.
they would cut off the fin then throw the dead shark back in the ocean.
i hope this helped.
☜(゚ヮ゚☜)(☞゚ヮ゚)☞
 
        
             
        
        
        
Explanation:
we have mass Extinction deforestation and pollution 
 
        
                    
             
        
        
        
The answer is pronuclei. A pronuclei is the state of the
nucleus of either the sperm or the ovum after the sperm has entered the ovum
but the two nuclei have not yet fused. When the sperm enters the ovum, the membrane
of the sperm pronuclei dissolves hence leaving no barrier for the two genetic
materials to combine.