Final answer:
A stem cell is an unspecialized cell that can divide indefinitely and differentiate into various specialized cells. Stem cell division through mitosis results in genetically identical daughter cells, ensuring repair and regeneration of tissues.
Step-by-step explanation:
A stem cell is an unspecialized cell capable of dividing indefinitely, either remaining a stem cell or differentiating into a variety of specialized cell types. Stem cells play a crucial role in the body's ability to grow and repair tissues. They are unique in their ability to become many different types of cells within the body.
In the context of mitosis, the division of stem cells produces two daughter cells that are genetically identical to the original stem cell and to each other. This is because mitosis is a single nuclear division in which the chromosomes are replicated and divided equally between the two new cells, ensuring each one has the exact same genetic material as the parent cell. Overall, stem cells provide a vital source for cell replacement and tissue repair.