Why are blood types considered multiple alleles

Multiple alleles means there are more than two more than two phenotypes available depending on the dominant and recessive alleles in the trait. Thus, the dominance pattern depends on which of them would would be more expressive than other. In the ABO blood group system, A and B both are dominant to O.

Explanation:

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.