C 50%
Sorry I have to fill the rest with random characters djsjsndkjhsuxnshskshd
        
             
        
        
        
A) There is 3/4 (75%) chance that the offspring will have freckles.
        
             
        
        
        
I believe the answer is c
        
             
        
        
        
Answer:
C
Explanation:
Without crossing over, each chromosome would be either maternal or paternal, greatly reducing the number of possible genetic combinations, which would greatly reduce the amount of genetic variation between related individuals and within a species.
 
        
             
        
        
        
The independent variable is the caffeine.
it controls the bpm.