The kidneys.
The kidneys keep blood isotonic by removing excess salt and water through urine.
 
        
             
        
        
        
Answer:
50% or 1/2. The result remains unchanged if the husband were to have G6PD.
Explanation:
For X-linked recessive inheritance, a female (XX) needs two recessive alleles to be affected while a male needs only one (XY). It is hypothetically assumed that the Y chromosome does not carry any trait.
Assuming the allele for the disease is represented by g, a woman whose father suffered from G6PD is a carrier for the disease with genotype  . A normal man will have the genotype
. A normal man will have the genotype  . When the 2 marries:
. When the 2 marries:
 x
   x    =
 =  It thus means that 50% or 1/2 of their sons will be expected to have G6PD.
It thus means that 50% or 1/2 of their sons will be expected to have G6PD.
Now, assuming the husband has G6PD, the mating becomes:
 x
   x    =
 =  50% or 1/2 of their sons is still expected to have G6PD. The ratio remains unchanged.
50% or 1/2 of their sons is still expected to have G6PD. The ratio remains unchanged.
 
        
             
        
        
        
Because it can respire anaerobically, without oxygen.
Hope this helps!
        
             
        
        
        
Take for example - you touching something sharp and instantly moving your hand away. 
Sensory neurons in your fingers detect the external stimuli of the sharp object and send a nerve impulse to the spinal cord (does not reach brain) and is sent back to a motor neurone - attached to an effector that moves the muscle and moves the hand away. This is a rapid reflex action and involuntary.