Caused by sexual contact are more difficult to treat..
        
             
        
        
        
Answer: I would need more context my good sir please tell me the full context and I’ll be able to give you full answer :)
Explanation:
 
        
             
        
        
        
Answer:
There are 2 alleles, a recessive allele and a dominant allele. The weaker allele is the recessive allele.