The genes encoded in your DNA result in the production of proteins that perform specific functions<span>within your cells. Various environmental factors and spontaneous events can lead to changes in genes.</span><span>These changes, called mutations, can lead to alterations in the structure and activity of the proteins your</span>cells use in their daily activities. In other words, changes to your genotype can result in changes to your<span>phenotype. We all have mutations in most of our body cells—yet we are, for the most part, normal and</span><span>functional human beings. </span>
        
             
        
        
        
<h2>Answer:</h2>
Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:
- Active repressor , Active activator 
- Active repressor, Inactive activator 
- Inactive repressor, Active activator 
- Inactive repressor, Inactive activator 
 
        
        
        
I’m not entirely sure about what you’re asking but chargaff’s rule is the thing that states that the amount of each “letter” in DNA is equal to its pair. Guanine (g) pairs with cytosine (C) and the same with adenine(A) and thymine (T). I’m sorry my answer is so vague, but I hope it helps a little!
        
             
        
        
        
Food chains I hope this is correct
        
             
        
        
        
Overproduction - An organism gives birth to too many children 
Genetic Variation - The offspring each have genetic differences in appearance, behavior, etc
Struggle to Survive - Offspring must fight in order to gain essential resources (food, water, mates, etc)
Successful Reproduction - Organism produces offspring with beneficial adaptations that aid in survival