Answer:
D. they are usually dominant or recessive.
Explanation:
alleles are pairs of genes found on a particular spot a chromosome. If one is dominant over the other it give rise to a particular trait.
 
        
                    
             
        
        
        
Answer:
the plasma membrane is a bilayer of lipid molecules with protein molecules embedded in it.
Explanation:
 
        
                    
             
        
        
        
Sorry, I don’t know what your options would be, but I would say that the female reproductive organs are INTERNAL and the male reproductive organs are EXTERNAL 
 
        
             
        
        
        
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Speed.  This is more of a physics question.