Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

490Maggenti and Gardnerisomerases n.pl. [Gr. isos, equal; meros, part; -asis, enzyme]Enzymes which convert one chemical compound to another;said to be isomeric compounds.isomeric a. [Gr. isos, equal; meros, part] Equivalent geneswhich can each produce the same phenotype.isomerogamy see isogamyisomerous a. [Gr. isos, equal; meros, part] Having equalnumber of parts, ridges or markings; homoeomerous. seeheteromerous.isometry n. [Gr. isos, equal; metron, measure] Growth of twobody parts remaining constant relative to each other asbody size increases.isomorphic a. [Gr. isos, equal; morphe, form] Alike or identicalin appearance; isomorphous. see anisomorphic.isomorphism n. [Gr. isos, equal; morphe, form] Similarity oforganisms of different ancestry. see heteromorphic.isomyarian condition (MOLL: Bivalvia) Having adductor musclesequal or subequal in size; homomyarian.isonym n. [Gr. isos, equal; onyma, name] The new name of aspecies, or higher classification being based upon the oldername or basinym.isopalpi n.pl.; sing. -us [Gr. isos, equal; L. palpus, feeler]Palpi with the same number of joints.isophene, isophane n. [Gr. isos, equal; phainein, to show] 1.A line connecting points of equal expression of a clinallyvarying character. 2. A line connecting areas in a region atwhich a phenological phenomenon occurs simultaneously.3. Lines at right angles to a cline on a map.isophenon n.; pl. isophena [Gr. isos, equal; phainein, toshow] Maintaining the same form, except sometimes insize, after a growing- or repetition-molt.isophenous a. [Gr. isos, equal; phainein, to show] Showingcharacteristics of a phenotype.isopodus a. [Gr. isos, equal; pous, foot] Having the legs alikeand equal.isopycnosis n. [Gr. isos, equal; pyknos, thick] Chromosome or