Most
lin-35;
pha-1(
fd1) double mutants arrested in early larval development, although a small percentage gradually matured into small sterile adults. Mutant adults frequently had a clear or "starved" appearance, reminiscent of eating- defective mutants. An examination of larval- arrested
lin-35;
pha-1(
fd1) mutants revealed that approximately 25% showed pharyngeal defects. The pharynges in these animals were markedly shortened as compared with wild type and did not form a functional connection to the mouth or buccal cavity (termed the Pun phenotype, for pharynx unattached).