ABSTRACT
This chapter deals with the asymmetry noticed at the cell level. Particular attention is paid to explain the incidences of asymmetric cell divisions and the factors that control them. The most important factors include cell cycle events, polarity, formation of cortical sites, characteristic cytoskeletal behavior, and certain genetical factors. The three models to explain cellular asymmetry are detailed: morphogen model, positional information model, and cytoskeleton model. Also described in this chapter are the details of motility in helical bacteria, as well as chirality of basal bodies and centrioles and their relation to ciliary/flagellar movements.
