Pupation in drosophila melanogaster and the effect of theLethalcryptocephal mutation

摘要: The events of normal pupation in Drosophila melanogaster are described detail from the time gas bubble expulsion until completion with eversion cephalic complex. importance internal for posterior movement prepupa is examined and its relation to larval mouthparts creation anterior space described. The phenotype lethalcryptocephal homozygotes, which characteristically cannot evert their heads, re-examined. Observations lethality multiple 1 (2)crc larvae pupae described. These new aspects mutant discussed respect abnormalities pupation. Fristrom's hypothesis that basic lesion an increased stiffness pupal cuticle due excess chitin deposition re-evaluated.