An african game warden recently found several rhinoceros tusks. because rhinos are endangered, all animals are tracked and the warden knows which animals live in the wild and which live in captivity. the warden suspected that poachers had stolen several captive rhinos and killed them for their tusks. the warden took the tusks with attached tissue for dna analysis to determine if the rhinos were stolen from the preserve and if he could prosecute the poachers. which tenet of cell theory best serves as a basis for this type of biotechnology? a) all living things are made up of cells. b) all cells are basically the same in chemical composition. c) the cell is the structural and functional unit of all living things. d) cells contains hereditary information passed down during cell division.