Allele frequency is determined by looking at the dominant and recessive allele of a genotype. 
Using the given, we can come up with the following computation for the allele frequency:
allele A = 100/300 allele B = 50/300 allele O = 150/300
Hence, the frequency of allele A is 0.33 or 33%, allele B is .17 or 17% and allele O is 0.50 or 50%.  
        
             
        
        
        
Answer:
Where two organism reproduce and have a offspring like themselves.
Explanation:
 
        
                    
             
        
        
        
Answer:
Hemorrhagic Cerebrovascular accident (CVA) also called stroke
Also an aneurysm can rupture and cause same effect.