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(A) Colchicine is an alkaloid obtained from $Colchicum$ $autumnale$ (family $Liliaceae$).It acts as a spindle poison by inhibiting the formation of sp

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Colchicine treatment

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(A) Colchicine is an alkaloid obtained from $Colchicum$ $autumnale$ (family $Liliaceae$).It acts as a spindle poison by inhibiting the formation of spindle fibers during cell division.This prevents the separation of sister chromatids,leading to the failure of cytokinesis and resulting in polyploidy,which is an increase in the chromosome number.

The chromosome number in plants can be increased by

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