Stem Cells Differentiate to Replace Tissue Cells

Steps:

• Identify the question: the feature allowing stem cells to replace skin cells.
• Recall stem cell properties: self-renewal and differentiation into specialized types.
• Evaluate choices: match to replacement mechanism in tissues.
• Select the option directly enabling cell replacement.

Why C is correct:

• Stem cells differentiate into specialized cells like skin cells, per their defining ability to develop into tissue-specific types for repair and renewal.

Why the others are wrong:

• A: Stem cells exist beyond birth, including adult ones in tissues; presence at birth isn't the replacing feature.
• B: Mitotic division produces cells, but differentiation, not division alone, enables replacement.
• D: Full chromosomes are in all body cells, not unique to stem cells' replacing role.

Final answer: C