- aberrant posteriorly-directed neurite
Any neurite that is extended towards the posterior of the animal from neurons that in wild-type animals make only anterior projections (e.g. D-type neurons in C. elegans).
- gustatory learning abnormal
Variations in the behavioral plasticity induced by the integration of two sensory signals (one of which is gustation (taste)) compared to control. For example, C. elegans animals can be trained to associate the taste of a substance (e.g. sodium chloride, normally an attractant) to an aversive stimuli (e.g. starvation) so that trained worms will avoid the substance in the absence of the aversive stimuli. Animals with this phenotype have an abnormal response to the trained stimuli compared to controls.
- X chromosome nondisjunction
The frequency of sex chromosome segregation is perturbed, resulting in the production of exceptional gametes (e.g. ova or sperm) and populations with a sex ratio altered from the rate of 1:500 as observed for control populations.
- gustatory aversive learning abnormal
Variations in the aversion of animals to substances sensed by gustation (taste) previously associated with an aversive stimuli during a gustation training protocol, compared to control. For example, C. elegans animals can be trained to associate the taste of a substance (e.g. sodium chloride, normally an attractant) to an aversive stimuli (e.g. starvation) so that trained worms will avoid the substance in the absence of the aversive stimuli. Animals with this phenotype will not exhibit the same aversion to the substance as compared to control animals.
- exocytosis variant
Variations in the process of secretion by a cell that results in the release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle by fusion of the vesicle with the plasma membrane of a cell, compared to control.
- zinc toxicity hypersensitive
The toxic response to zinc occurs at a lower concentration or a shorter exposure compared to control animals. In C. elegans hypersensitive animals exhibit delayed development or lethality at concentrations of zinc (e.g. ZnSO4), which has little or no effect on control worms.
- cell stress response variant
Variations in the activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating the organism is under stress, compared to control. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
- pore forming toxin hypersensitive
Animals respond to pore forming toxins at a lower concentration or a shorter exposure compared to control animals. Increased susceptibility to pore forming toxins (e.g. Cry5B from Bacillus thuringiensis) is often measured by a decrease in the rate of survival in the presence of pore forming toxins compared to controls.