Answer:
The answer is not in any of the options and is the following:
to eliminate any remaining Hfr cells.
Explanation:
In a medium that has a streptomycin antibiotic it is used to kill Hfr donor cells after the conjugation is interrupted. This is entirely due to the streptomycin sensitivity allele (str-s) which are found in Hfr strains. The presence of the streptomycin resistance allele, located in the receptor, is used for the specific destruction of Hfr donor cells after conjugation occurs.
 
        
             
        
        
        
Answer:
A: 250 N to the right
Explanation 
got it right on a quiz apx learning 
 
        
             
        
        
        
Answer:C 
Explanation:BECAUSE I SAID SO
 
        
             
        
        
        
Answer:
The answer is C
Explanation: The random change in the gene pool is due to genetic drift. Remember, genetic drift occurs at a more rapid rate when the population size is reduced. The flood is a random occurrence. It could have as easily been a drought.
 
        
                    
             
        
        
        
I believe it is biosphear<span />