Definitionn. the physically discrete element that Darwin proposed as responsible for heredity
Last update: August 11, 2015
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B=gemmule-cell of _Spongilla lacustris_ containing green corpuscles (shaded dark), × 800 (_after Weltner_). [Please select]
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C=gemmule-cell of _Ephydatia blembingia_ showing "tabloids" of food-material, × 1150 (_after Evans_). [Please select]
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E=three stages in the development of a gemmule-spicule of _E. [Please select]
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--Diagram of a vertical section through the gemmule of _Spongilla proliferens_. [Please select]
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The gemmule-spicules have rather narrow flattish disks, the edge of which is feebly but closely serrated. [Please select]
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_Pneumatic coat_ A horny or chitinous layer on the surface of the gemmule containing air-spaces. [Please select]
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Microscleres of the gemmule with comb-like vertical rows of spines at both ends PECTISPONGILLA, p. [Please select]
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Specimens of _Spongilla crateriformis_ taken in a certain tank in Calcutta during the cold weather had the majority of the skeleton-spicules blunt, while the extremities of the gemmule-spicules were distinctly differentiated. [Please select]
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