3 Phenotypes found (0.003 seconds) alternative lengthening of telomeres A telomerase-independent telomere maintenance pathway that allows for strains to survive in the absence of telomerase. 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. mating plug production variant Males differ from control animals in their ability to form copulatory plugs or their placement of these plugs. In C. elegans, males of the Hawaiian strain (CB4856) typically form mating plugs.