Lecture 16.0

• Stem cells remain undifferentiated and can produce either 2 stem cells or a stem cell and another cell.
• Stem cells in plants are called meristems  
• •Animals have stem cells in a variety of locations
• stem cells differentiate using signaling molecules.
• Therapeutic cloning is when you insert someone's genetic material into an empty egg. (not yet possible)
• In reproductive cloning, you let the babg grow before harvesting the organs.
• Dolly the sheep was the first reproductive clone in 1997
• Xenotransplantation is the act of making a mix of a human and a another animal (chimera) in order to grow organs for the human.
• We have used Xenotransplantation to put pig ordans into brain dead humans and it has worked.