Amoeba is a single celled organism who begins the process of reproduction by the division of its nucleus into two daughter nuclei. When the parent Amoeba grows to its fullest ,it's nucleus starts dividing.The nucleus divided to form 2 daughter nuclei.Then the cytoplasm expands and divides.After the cytoplasm divides, 2 new daughter amoeba are formed.Since two new individual are produced it is called binary fission.You can understand the process of binary fission in amoeba here:

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Overview of Binary Fission in Amoeba
Binary fission is a form of asexual reproduction commonly observed in unicellular organisms like amoebas. This process allows amoebas to reproduce rapidly in favorable conditions.
Steps of Binary Fission
- Cell Growth
The amoeba begins by enlarging its cell. It absorbs nutrients from its environment, which facilitates growth.
- Nuclear Division
The amoeba contains a nucleus that undergoes mitosis. During this phase, the genetic material (chromatin) replicates and divides into two nuclei.
- Cytoplasmic Division
After nuclear division, the cytoplasm begins to constrict in the middle. This process is known as cytokinesis. The cell membrane pinches inward, creating two distinct compartments.
- Formation of Two Daughter Cells
The final stage involves the completion of the division, resulting in two genetically identical daughter cells. Each daughter cell contains a nucleus and a portion of the cytoplasm.
Significance of Binary Fission
- Rapid Population Growth
Binary fission allows amoebas to multiply quickly, which is crucial for survival and colonization of new environments.
- Genetic Consistency
Since the daughter cells are clones of the parent, they maintain genetic stability, which is beneficial in stable environments.
Conclusion
Binary fission is an efficient reproductive strategy for amoebas, enabling them to exploit resources and thrive in diverse habitats. Understanding this process highlights the remarkable adaptability of single-celled organisms.