Answer:
Each of her parents must have one recessive gene for blond hair color
Explanation:
- Blond is a recessive trait
- Since Silvia is blond this means she has both copies of the recessive gene for hair color
- Therefore, both her parents have a recessive gene for blond hair and passed it down to her.
- The parents don't have blond hair because their dominant gene for browns masks the recessive gene for blond.
 
        
             
        
        
        
Inner membrane of mitochondrion
        
             
        
        
        
38 ATP is produced during cellular respiration
        
             
        
        
        
Nucleus has genetic material (DNA) inside it, so it commands the cell about how it has to be function......