Answer:
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Explanation:
When a trait is recessive, an individual must have two copies of a recessive allele to express the trait. Recessive alleles are denoted by a lowercase letter (a versus A). 
 
        
                    
             
        
        
        
Answer:
The true statements regarding the adrenal glands' relationship with the autonomic nervous system are:
a. The adrenal cortex is an extension of the parasympathetic nervous system.
c. The adrenal glands are strictly nerve tissue.
d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.
e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.
Explanation:
The  levels of the central nervous system which play important roles in influencing the autonomic nervous system include cerebral cortex, hypothalamus, brain stem, and spinal cord.  Usually, epinephrine (adrenaline) and norepinephrine are released into the blood stem when stress or a threat occurs.  This alert serves as a warning signal and defense system.  The purpose is to maintain homeostasis. 
 
 
        
             
        
        
        
Alleles. Alleles are the "same" genes, but provide a variation of the intended function. 
        
                    
             
        
        
        
The sun rays are received by the plants and explell oxygen and we breath the oxygen to be able to survive