Question
Biology Question on cell cycle and cell division
Amitosis is shown by
A
bacteria
B
Euglena
C
Syllis
D
Hydra
Answer
bacteria
Explanation
Solution
In amitosis there is no differentiation of chromosomes and spindle. The nuclear envelope does not degenerate. The nucleus elongates and constricts in the middle to form two daughter nuclei. This is followed by a centripetal constriction of the cytoplasm to form two daughter cells. Amitosis is not a regular method of division because it does not divide the nuclear matter equitably. Some authors include cell division of monerans (e.g, bacteria) under amitosis due to absence of spindle formation.