What is the genome?
In GCSE biology, the genome of an organism is its entire genetic material, or DNA. The genome contains all the information needed to build proteins, allowing cells to function. Almost every cell contains a complete copy of an organism’s genome in the form of chromosomes, for example human cells contain the human genome in 46 chromosomes.
In eukaryotic organisms, such as animal and plant cells, the genome is primarily stored in linear chromosomes in the nucleus, while bacterial cells have a single circular chromosome that is present in the cytoplasm.
Genome revision resources to ace your exams
You can explore the genome further using our GCSE biology revision notes, topic questions and flashcards for your specific exam board:
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