- multiple hooks
Male animals exhibit multiple copulatory hooks. In wild type C. elegans males, a single hook is normally present.
- osmolarity modulated swimming variant
The swimming behavior of animals are influenced or modulate by the osmolarity of the swimming buffer. The swimming of wild-type C. elegans animals are not affected by the osmolarity of the swimming liquid.
- persistent primordial germ cell lobes
Animals exhibit persistent cellular lobes of the primordial germ cells Z2 and/or Z3 at the L1 larval stage or later, in contrast to wild type animals
- 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).
- swimming induced paralysis
Animals become paralyzed after a measured amount of time swimming. In C. elegans, more then 80 percent of wild-type animals continue swimming vigorously in liquid even after 30 minutes.
- temperature learning variant
Wild-type animals will exhibit an altered temperature preference based on food/temperature conditioning. Temperature learning variants do not exhibit altered responses to temperature after conditioning compared to control animals.
- dominant negative enzyme
Any variation within an enzyme that causes it to act antagonistically towards the wild-type enzymatic product. These mutations usually result in an altered molecular function (often inactive) and are characterized by a dominant or semi-dominant phenotype.
- food dependent body size variant
Animals do not differ in size when grown on different food sources to the same extent as that measured for control animals. For example, in C. elegans, wild type worms are 1.65 times larger when grown on HB101 compared to those grown on OP50.
- differential touch sensitivity variant
Animals differ from control animals in response to mechanical stimulation targeting different parts of the same cell. In N2 wild-type animals, response to touch near the ALM cell body is reduced compared with touch of the cell area near the second pharyngeal bulb.
- light touch habituation variant
Any variation in the decreased behavioral response to repeated light head or tail touch compared to control. A gentle touch to the animal's head causes backward movement, whereas a gentle touch to the animal's tail causes forward movement. When wild-type animals are touched repeatedly on the head or tail, after some repetition they stop responding to the touch stimulus.