Bone marrow stem cells differ from differentiated progenitor stem cells in what respect?
**Core Concept**
Bone marrow stem cells are a type of pluripotent stem cells that have the ability to self-renew and differentiate into various cell types within the hematopoietic lineage. This property distinguishes them from differentiated progenitor stem cells, which are committed to a specific lineage and have limited proliferative capacity.
**Why the Correct Answer is Right**
Bone marrow stem cells are characterized by their ability to undergo asymmetric division, where one daughter cell retains the stem cell phenotype and the other differentiates into a mature cell type. This process is mediated by the Wnt/β-catenin signaling pathway, which regulates the self-renewal and differentiation of stem cells. In contrast, differentiated progenitor stem cells undergo symmetric division, resulting in two daughter cells with the same lineage commitment.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not accurately describe the key difference between bone marrow stem cells and differentiated progenitor stem cells.
* **Option B:** This option is incorrect because it is not a characteristic that distinguishes bone marrow stem cells from differentiated progenitor stem cells.
* **Option D:** This option is incorrect because it is not a specific enough description of the difference between bone marrow stem cells and differentiated progenitor stem cells.
**Clinical Pearl / High-Yield Fact**
Bone marrow stem cells play a critical role in hematopoiesis, and their dysfunction can lead to various hematological disorders, such as leukemia and aplastic anemia. Understanding the properties of bone marrow stem cells is essential for the development of novel therapeutic strategies for these diseases.
**Correct Answer: C. Their ability to undergo asymmetric division.**