Biology deal with a fascinating diversity of subjects related to living organisms.
While studying biology, one of the basics is to understand the process of cell division. The growth of every living organism depends on the cell division, on the multiplication and development of the cells.
Direct cell division (Amitosis), Indirect cell division (Mitotic) and Reduction division (Meiosis) and the three types of cell divisions that occur in plants and animals. Here, we will discuss two main types of cell division: a) Amitotic division and b) Mitotic division.
Amitosis is a popular means of asexual reproduction. Here, first the nuclear material is divided into two. This division is followed by the division of the cytoplasmic content. Finally, the cell divides into almost two equal halves.
Mitosis is usually related to the growth of the body. The somatic cells undergo mitosis so that the body can grow at regular intervals of time. The daughter cells formed out of mitotic division also look similar to the parent cells.
The mitotic cycle of cell division includes a number of different phases. First set of phase includes G1 phase, S phase and G2 phase. These three cycles collectively form the Interphase.
This is the resting phase in which there is no active cell division. However, nucleus and cytoplasm remain active and grow in volume. The interphase is also the longest phase of the mitotic cycle.
Next phase is the Mitotic phase in which the actual division takes place. Different phases of metaphase are: prophase, prometaphase, metaphase, anaphase and telophase respectively. The uses of mitosis are many.
It helps maintain the proper cell size. It maintains equilibrium in the DNA and RNA contents. Old and worn-out cells are replaced by new cells. Mitosis also helps in asexual reproduction. Gonads and sex cells also rely on mitosis to proliferate.