Answer:
A
Explanation:
The hypothalamus is a portion of the brain particularly concerned with homeostasis; it influences the action of the medulla oblongata, a lower part of the brain, the autonomic nervous system, and the pituitary gland.
 
        
             
        
        
        
Variation means difference in genetic makeup between individuals within a specie.
        
             
        
        
        
A is the correct answer I belive 
        
                    
             
        
        
        
Answer:
sour, corrosive
Explanation:
An acid is a substance that donates hydrogen ions. Because of this, in an acidic solution  there are more hydrogen ions than hydroxide ions. This means the more acidic a food is, the more hydrogen ions are available to trigger the sour taste receptors. A base is a substance that accepts hydrogen ions.
 
        
             
        
        
        
Answer:
Genetic mapping for unequivocal identification of the potentially causative mutation  
Explanation:
Galactosemia is a genetic disorder caused by mutations in the Galactose-1-phosphate uridylyltransferase (GALT) gene, which encodes an enzyme involved in the metabolism of galactose. Gene mapping is a technique widely used in genetics to identify the position of one locus a chromosome by using molecular markers to estimate genetic distances. Genetic mapping provides useful evidence in order to identify when a disease that is transmitted from parent to offspring can be associated with one or more genes and then determine which gene/s is/are responsible for this condition.