. Colchicine in agriculture, medicine, biology, and chemistry. Colchicine; Colchicine. 172 Colchicine that action during division leading up to niciosis creates octoploid or tetraploid pollen mother cellsJ'^ In contrast, activity dm ing meiotic divisions I and II creates tetraploid monads, and activity at division II only, diploid monads. Monadal formation is a special feature of the c-meiosis. The monads replace the usual tetrads of microspores forming at the close of a ^' ^*^- ^-~- "^^ Since archesporial divisions become regular c-mitoses, these are not described in great detai
. Colchicine in agriculture, medicine, biology, and chemistry. Colchicine; Colchicine. 172 Colchicine that action during division leading up to niciosis creates octoploid or tetraploid pollen mother cellsJ'^ In contrast, activity dm ing meiotic divisions I and II creates tetraploid monads, and activity at division II only, diploid monads. Monadal formation is a special feature of the c-meiosis. The monads replace the usual tetrads of microspores forming at the close of a ^' ^*^- ^-~- "^^ Since archesporial divisions become regular c-mitoses, these are not described in great detail here, except to say that one c-mitosis in this MITOSIS B Z NORMAL COLCHICINE. C. MEIOSIS A N NORMAL. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eigsti, O. J. (Orie Jacob), 1908-; Dustin, Pierre. Ames, Iowa State College Press
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