No it is not. For example humans have 46 chromosomes and some dog breeds have 78.
        
                    
             
        
        
        
The speckled appearance of a rock is called a rock's color. :)
        
             
        
        
        
When exercising carbohydrates an fats are oxidized to release energy used by muscles, during this oxidation 1 liter of oxygen is equivalent to approximately 5 calories. Therefore if one liter of oxygen is consumed every minute during exercise, then in an hour 60 liters of oxygen will have been used. But since one liter of oxygen is equivalent to 5 calories, then in an hour 300 calories will have burned.
        
                    
             
        
        
        
There are choices for this question namely:
a) "Exhale forcefully while the chest tube is being removed."
b) "While the chest tube is being removed, raise your arms above your head."
c) "During the removal of the chest tube, do not move because it will make the removal more painful."
<span>d) "When the tube is being removed, take a deep breath, exhale, and bear down."
The correct answer is "when the tube is being removed, take a deep breath, exhale, and bear down". This is called a Valsalva maneuver and this functions to prevent the air from leaking back to the pleural space and eventually prevent pneumothorax. After which, a clean, air tight, dressing shall be applied to the wound.</span>
        
             
        
        
        
Answer:
The 5' and 3' polarity restriction 
Explanation:
Discontinuous replication is when synthesis of new DNA molecule takes place as a series of short fragments that will subsequently be joined together. 
These fragments are called the Okazaki fragments.
DNA synthesis takes place from 3' to 5' end. However due to 5' and 3' polarity. The replication has to be discontinuous due to the synthesis happening backwards and okazaki fragments being formed.