Answer:
D. Offspring only receive one version of their parents' traits. 
Explanation:
To be specific, they receive on version of each parent. Traits are segregated during gamete formation, where one version of the trait comes from one parent, and the other version of that same trait comes from the other parent. When they join during fertilization, a new organism is made through the combination of the traits. However, the trait that will be expressed, according to Mendel, would be the one that is dominant. 
 
        
                    
             
        
        
        
Answer:
Lister's work led to a reduction in post-operative infections and made surgery safer for patients, distinguishing him as the "father of modern surgery"
Explanation:
 
        
                    
             
        
        
        
Answer:
leukocyte
Explanation:
leukocyte is the organelle missing in the red blood cell.