A haploid sperm from one species and a haploid egg from another species may form a diploid interspecies hybrid. Meiosis
In cell biology, cellular compartmentalization and cell cycle dictates that SNARE-mediated trafficking, Hayflick limit, P53 and cyclin regulation control proliferation. Therefore Allopolyploid is correct as it aligns with membrane trafficking and cell cycle control, supported by mechanistic studies and conserved across related systems.
Ref: Alberts et al., Molecular Biology of the Cell, 6th Edition, Chapter 17, Cell Cycle and Regulation, explains Cdc2, cyclins, P53, proteasomes, Hayflick limit, primary culture and immortalization mechanisms governing proliferation.
