The correct answer to the question is:
C. They have identical DNA, but each cell expresses a different set of genes.
Explanation:
1. Bone cells and nerve cells in a person's body contain the same DNA in their nuclei.
2. However, each type of cell expresses a different set of genes based on its specific function and role in the body.
3. This differential gene expression leads to the specialization of bone cells for their functions (like bone formation and maintenance) and nerve cells for their functions (like transmitting electrical impulses).
4. Even though the DNA is the same in both types of cells, the activation of different genes allows for the diverse functions and characteristics of bone cells and nerve cells.
