Figure 1.

The C. elegans QL.p neuroblast lineage. (A) Schematic representation of the postembryonic QL.p neuroblast lineage in wild-type (left) and mutant (right) worms. Vertical and horizontal lines represent individual cells and cell divisions, respectively. “X” denotes a cell death. (B) Schematic representation of the cell sizes of the QL.p neuroblast and its daughter cells in wild-type (left) and mutant (right) worms. In wild-type worms, QL.pa is nearly three times as large as its sister, QL.pp. However, in mutants with defects in the asymmetric division by size of QL.p, QL.pa and QL.pp can be of similar sizes.