In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

Its significance was identified in 1972 by Kerr, Wylie, and Currie. Affecting scattered single cells, features include the disintegration of cell junctions, cytoplasmic condensation, and fragmentation of the nucleus. A mutation in gene p53 stops this process which cells in the uterine wall undergo monthly. For ten points, name this alternative to necrosis, a programmed form of cell death.
Science