Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

40Maggenti and Gardnergraphic region.allochroic a. [Gr. allos, other; chroia, color of the skin]Changeable in color, or variation of color.allochronic a. [Gr. allos, other; chronos, time] Not occurringat the same period of time; not contemporary.allochronic speciation Speciation that does not occur at thesame period of time, thus causing morphological discontinuity.see synchronic speciation.allochthonous a. [Gr. allos, other; chthon, earth] Exotic; importedor migrated from another area; peregrine. seeautochthonous.allocryptic a. [Gr. allos, other; kryptos, conceal] Concealing;said of organisms that conceal themselves with coveringsof other organisms or with inanimate materials.allogamy n. [Gr. allos, other; gamos, marriage] Cross-fertilization.see autogamy.allograft n. [Gr. allos, other; OF. greffe, graft] A piece of tissueor organ from one individual grafted to another of thesame species.alloheteroploid n. [Gr. allos, other; heteros, different; aploos,onefold; eidos, form] Heteroploid individuals whose chromosomesderive from various chromosome sets. see autoheteroploid.alloiogenesis n. [Gr. alloios, of another kind; genesis, beginning]Alternation of sexual and parthenogenetic generations:alternation of generations.alloiometron n. [Gr. alloios, of another kind; metron, measure]Measurable variability in the physical developmentwithin a species or race.allokinesis n. [Gr. allos, other; kinesis, movement] Passive orreflex movement. allokinetic a. see autokinesis.allomeristic a. [Gr. allos, other; meros, part] Refers to anyorganism differing in the number of parts of any organfrom that which is customary in the group.allometric coefficient The slope of the logarithmic growthcurve of the measurement of an organ or part against thatof the whole remainder or another part; sometimes re-