<u>Answer:</u>
<em>Mitochondria appear in the greatest numbers in cells that are</em><em> </em><em><u>Muscle cell.</u></em>
<u>Explanation:</u>
Mitochondrion is the power house of the cells. It releases the energy need for the cells. So mitochondrion is found in large number in muscle cell because muscles are the component of our body that needs large amount of energy.
Muscles need to be frequently moved in our body so large number of mitochondria helps in providing the enough energy for the proper muscle movement.
The answer to your question is12
In hemophilia A it’s caused by a mutation in the gene for factor VIII. Hemophilia B is a result in a deficiency in factor IX due to a mutation in its corresponding gene.
In both cases, it is a mutation in the DNA (the macromolecule).