Propagation the ability to self- renew stem cell Asymmetric division instead of SYMMETRIC DIVISION giving rise to two of stem cell the same cells, you get one regular cell ASYMMETRIC and another stem DIVISION Limitless progenitor cell replication telomeres The ability to self￾renew.  Asymmetric division: instead of giving rise to two of the same cells, you get one regular cell and another stem .  Limitless replication: telomeres