Final answer:
The mammalian anti-apoptotic gene related to C. elegans ced-9 is p53, which is a tumor suppressor gene that can induce apoptosis if crucial cell cycle events fail.
Step-by-step explanation:
The mammalian anti-apoptotic gene that is related to C. elegans (nematode) ced-9 is important in the regulation of programmed cell death or apoptosis. In mammals, the equivalent of C. elegans ced-9 is the p53 gene. The p53 protein is a negative regulatory molecule that can trigger apoptosis if vital cell cycle events do not occur. This has been demonstrated in various studies, including those conducted in model organisms like C. elegans, known for its qualities that make it a good subject for genetic and developmental studies. The p53 protein mediates normal cell cycle control and is designated as a tumor suppressor, as it can prevent the proliferation of cells that have the potential to form cancers.