Stem cells are undifferentiated cells that have the ability to continue to grow and divide in their nonspecialized state for long periods of time (e. g., months or years). Although the genes found within stem cells are the same, stem cells differentiate into unique cell types (e. g., muscle cells, nerve cells, etc.) due to
A.
mutations in their genetic code.
B.
meiotic division and fertilization.
C.
different patterns in their gene expression.
D.
random segregation and proliferation.