Figure 14.7: The Concept of Cytoplasmic Segregation (A) The unequal distribution of cytoplasmic determinants in a fertilized egg determines the fates of its descendants. (B) The zygote of the nematode worm Caenorhabditis elegans (left) shows an asymmetrical distribution of cytoplasmic particles (stained green). The progeny of the first cell division (right) receive unequal amounts of the particles.