Answer:
stethoscope is the instrument used to measure heart beat
 
        
                    
             
        
        
        
Answer:
when an organism is homozygous at the locus
Explanation:
 
        
             
        
        
        
Answer:
co-dominance 
Explanation:
in co-dominance both parents are dominant 
 
        
             
        
        
        
Answer:
I would say the second one.
Explanation:
I'm sorry if it's wrong
 
        
                    
             
        
        
        
<span>The means is unknown. Filoviruses are known for causing hemorrhagic fever in humans. However, once a human is infected, passing the virus from person-to-person is the means by which others become infected. Most especially is the transmission through infected bodily fluids or objects that have been unsterilized and come into contact with those fluids.</span>