- L4 lethal
Animals die at the L4 stage of the life cycle.
- L4 arrest
The developmental program of the animals does not continue past the fourth larval stage (L4).
- vulval invagination variant L4
The characteristic Christmas-tree shaped invagination formed by the terminal vulval cells at the mid-late L4 stage is altered.
- late larval lethal
Animals die during late larval development. In C. elegans, this occurs during the L3- L4 larval stages of the life cycle.
- late larval arrest
Larvae arrest during late larval development. In C. elegans, larval arrest occurs during the L3 or L4 stages of larval development.
- L4 adult molt defect
Animals exhibit defects in the process of shedding, part or all of its cuticle, during cuticle replacement that punctuates L4 to adult transition.
- L3 L4 molt defect
Animals exhibit defects in the process of shedding, part or all of its cuticle, during cuticle replacement that punctuates L3 to L4 transition.
- precocious alae
Formation of alae occurs earlier in development compared to control animals; In C. elegans, adult lateral alae are typically generated during the late L4 stage.
- larval arrest
The developmental program of the animals halts at any larval stage and thus fails to reach adulthood. In C.elegans, this occurs anytime during L1-L4 stage.
- over retracted male tail
Adult males exhibit a truncated tail, often without a fan or have well-developed fans but squarish, truncated back ends compared to control. In C. elegans this is due to precocious male tail tip retraction beginning in the early L3 stage (normally retraction begins in the L4 stage). Condition can be lethal if the function of the anus is affected.