The V(D)J recombination enzyme tDt can be used with fluorescently tagged deoxynucleotides in an assay for this process. The presence of 180 base pair “laddering” is (15[1])specific for this (-5[1])process due to CAD activity at linker regions. (15[1])A heptameric wheel-shaped complex containing Apaf-1 helps mediate (15[1])this process by recruiting enzymes to its (*) CARD domains. (-5[1])Increased cytosolic-free calcium ions can promote this process through calcineurin mediated dephosphorylation of BAD. The extrinsic (10[1])pathway of this process begins when the Fas ligand binds to its receptor. During this process, a proteolytic cascade triggers the release of caspases. (10[2]-5[1])This process begins when the mitochondrion releases cytochrome c. For 10 points, name this process of (10[1])programmed cell (10[1])death (10[1])■END■ (10[3])