I would say that many of our heritable traits are <span>influenced by several genes and by the environnement.
It's, for the biggest part, because of the mutations. You have your heritables traits thanks to your mom and your dad. But a mutation caused by either several rays like ultraviolets or chemicals can changed your traits.
Hope this helps !
Photon</span>
        
             
        
        
        
Answer: The drug abuse is influenced by the environment and exerts influence on the gene expressions. 
Explanation:
The genetic make up of the person is decides, which genes will be expressed and develop a trait in an individual. But this genetic expression can be influenced by the environmental factors like food, exposure to sunlight, and others. This study which relate environment with the genetic make up is called epigenetics. No person is drug addict by birth but the consumption of drug can influence the genetic make up and traits in a abuser. So here, the environment is influencing the genetic basis of a abuser. 
 
        
             
        
        
        
The answer is Complement 
this is for my Gradpoint fellas 
 
        
                    
             
        
        
        
Answer:
the symbol for nitrogen is N
Explanation:
 
        
                    
             
        
        
        
Answer:
Cysteine
Explanation:
<u>Determine the Amino acid that is primarily involved in Binding </u>
The Amino acid that is primarily involved in Binding is Cysteine. while the other Amino acid ( i.e.  Histidine ) will be involved in Catalysis.
since the enzyme is functional at pH 6 to 8. and Cysteine has a pH of 5, it should be deprotonated and used primarily for Binding .