Y lineage variant

The descendants of the Y cell (which divides only in the males) exhibit altered developmental programs compared to their counterparts in control animals.

biofilm absent head

Animals can move thorough a lawn of bacterially produced biofilm without accumulating an enormous amount of biofilm on its nose. When C. elegans is exposed to certain bacteria (e.g., Y. pestis), a biofilm accumulates on a worm's head. The presence of this biofilm inhibits feeding by the worm, and thereby prevents growth.

transdifferentiation defective

The conversion of one differentiated cell type into another does not occur as it does in control animals. In C. elegans, the Y cell undergoes a dramatic redifferentiation from being a cell in of the rectum to a PDA neuron. This transdifferentiation requires the cell to withdraw from its established position, migrate, and then become a motor neuron.

plugged excretory pore

Males receive copulatory plugs from other males, deposited on their excretory pores. This phenotype is polymorphic among C. elegans strains and also in C. briggsae.

sodium acetate chemotaxis defective

Failure in directed movement in response to sodium acetate. In C. elegans, sodium acetate is an attractant. Sodium acetate has also subsequently been used to assay for Na+ attraction in C. elegans.

ammonium chloride chemotaxis defective

Failure in directed movement in response to ammonium chloride compared to control. In C. elegans, NH4Cl is an attractant. NH4Cl has also subsequently been used to assay for Cl- attraction in C. elegans.

embryonic lethal

Animals die during embryonic development. In C. elegans, often assayed as refractile eggs that fail to hatch; when applied to large-scale RNAi screens in C. elegans, more than 10% of embryos die.

temperature induced dauer formation variant

Animals exhibit variations in the entry into the dauer stage when exposed to temperatures that induce dauer formation in control animals. In C. elegans, many Daf-c animals enter dauer at 25C, whereas Hid animals enter dauer at 27C.

chloride chemotaxis defective

Failure to execute the characteristic response to chloride. In C. elegans, chloride is typically an attractant.

C lineage variant

The descendants of the C blastomere exhibit altered developmental programs compared to their counterparts in control animals.