DEATH MACHINERY IS CONSERVED. “The machinery of apoptosis is well conserved among animals and it is composed of caspases (the proteases which execute cell death), adapter proteins (caspase activators), Bcl‐2 family proteins and Inhibitor of Apoptosis Proteins (IAPs).”
https://celldeath.files.wordpress.com/2010/11/lopezself_munoz.pdf