Answer:
Its cells have thick, hard walls. 
Explanation:
 
        
                    
             
        
        
        
Answer:
Mother- XXH
Father- XHY
Explanation:
The mother is a carrier for hemophilia and since the disease is sex linked and found on the X chromosome, only one of the alleles has that H allele attached to it. The father is male so he only has one X chromosome, which is why he is effected by the disease and not just a carrier like the mother.
 
        
             
        
        
        
Answer:
im not so sure but i thinks its frame shift mutation
Explanation:
 
        
                    
             
        
        
        
Answer: That act helps endangered species from being extinct
Explanation: