tweaking the definition of human, biological life
In the Journal of Perinatal Medicine, Erik Hauzman and Zoltan Papp look to tweak the standard definition by defining biological life as conception given “biparental origin of the chromosome set”.
From the abstract:
Conception sometimes results in products that are not capable of developing into an embryo and fetus....We elucidate the generation of these abnormal growths and provide explanations as to why they cannot be regarded as human individuals or human beings. We argue that it is not the number of chromosomes that is required for a given form of human life to become a human being but rather the biparental origin of the chromosome set.
Click here for a set of textbook definitions of biological life.