D. Certain genes are turned on and others are turned off; this action produces adult cells that are specialized
Answer:
Because they have the same function to swim with, but have different structures and made of different material.
Explanation:
Antibiotics should be the answer
<span>The answer is A. This is because the P53 gene is involved in a cell cycle regulation and is thought to hold the cell in a particular phase until DNA defects are repaired. </span>
