Answer:
The correct option is C. Rare alleles tend to remain rare even when they are dominant.The distribution of a gene among individuals is determined by mating and environmental factors.
Explanation:
Most people believe that a rare allele would only be recessive. But this is not correct. A rare allele can be dominant. The frequency of an allele to occur in a population will depend on the environmental factors. The alleles which code for traits that are best suitable for living in an environment will be seen in more abundance. The frequency of an allele to occur in a population also depends on the breeding trends of the population. 
 
        
             
        
        
        
A virus structure can be  on of the following: icosahedral, enveloped,  complex and helical. These viruses can appear to in a shape but a closer, more steady look reveals that they are actually icosahedral.
 
        
             
        
        
        
The correct answer is pressure
        
                    
             
        
        
        
It could cause you Death, and/or diseases
        
                    
             
        
        
        
Answer:
Fungi most fungi produce cellulases.
Explanation:
Fungi are eukaryotic microorganisms, however unlike other eukaryotes. Their cell wall is made up of chitin instead of cellulose.
Chitin is a fibrous polysaccharide found in the exoskeleton of arthropods and the cell wall of fungi.  where as cellulose is also a polysaccharide which is an important structural component of plant cell wall.
Since fungi are saprophytic they produce enzymes such as cellulases that will help in breakdown of cellulose for food.
They cannot have a cell wall made of cellulose.