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Friday, August 20, 2010

LONGITUDINAL BINARYFISSION IN EUGLENA

*Binaryfission :- The division of parent individual into two daughter individuals is called binary fission
Longitudinal Binaryfission In Euglena :
*It occurs in favourable conditions
*First karyokinesis takes place
*During karyokinesis nucleus is divided by mitosis
*Cytokinesis follows karyokinesis
*During cytokinesis a longitudinal furrow is formed
*The longitudinal furrow extends to posterior end to divide the euglena into two daughter individuals
*Longitudinal binaryfission in euglena is also called symmetrogenis binaryfission
*Kinety :- kineto some ,kinetodesmos and kinetodesmata are collectively called kinety
*Proter :- The young individual that is formed from anterior region of paramecium is called proter
*Opisth :- The young individual that is formed from posterior region of paramecium is called opisth
*Clone :- A group of youn individuals that are formed by repeated binaryfisions from a paramecium is called clone

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