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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 963zygophase see diplophasezygosis n. [Gr. zygosis, a joining] 1. Conjugation. 2. (ARTHRO:Insecta) In coccids, the median lobes <strong>of</strong> the pygidium thatare united basally by internal sclerotization. 3. (MOLL: Gastropoda)A neural connection between the supraintestinalganglion and the pleural ganglion on the left side or betweenthe subintestinal ganglion and the pleural ganglionon the right side. see orthoneury.zygote n. [Gr. zygosis, a joining] A fertilized egg or egg nucleus.zygotene n. [Gr. zygon, yoke; tainia, ribbon] The 2nd stage inmeiosis during prophase I, following the leptotene stage;homologous chromosomes (zygonema) begin to pair andcoil about one another. see zygonema.zygum n.; pl. zyga [Gr. zygon, yoke] 1. (ARTHRO: Crustacea)In Ostracoda, a chitinous process <strong>of</strong> the male copulatoryapparatus suspended in the posterior shell region by asystem <strong>of</strong> chitinous rods, about which the peniferum arcs.2. (ARTHRO: Insecta) In Scarabaeoidea larva, a convexcross bar forming the anterior margin <strong>of</strong> the haptomerum.zymogen n. [Gr. zyme, leaven; genesis, origin] Formerly asubstance able to be transformed into an enzyme.

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