Binary Fission - GCSE Biology Definition

Reviewed by: Lára Marie McIvor

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Binary fission is a type of asexual reproduction commonly found in prokaryotic organisms such as bacteria. In this process, a single parent cell divides into two genetically identical daughter cells. It begins with the replication of the organism’s DNA, which then attaches to different parts of the cell membrane. As the cell grows, it elongates and pulls the DNA copies apart. Finally, the cell membrane pinches inwards and splits the cell into two. Binary fission is a rapid and efficient method for unicellular organisms to reproduce and colonise an environment.

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Lára Marie McIvor

Reviewer: Lára Marie McIvor

Expertise: Biology, Psychology & Sociology Subject Lead

Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.

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