Genetic Variation

Start with the foundations

Genetic Variation and Change is a useful first mind map if you want to review the basics. It introduces chromosomes as long strands of DNA, distinguishes coding and non-coding regions, and describes a gene as a section of DNA that codes for a protein. Follow its branches to see how these terms fit together before moving on to variation.

Next, look at Inheritance and Variation. Its branches distinguish continuous and discontinuous variation and describe genetic information passing from parents to offspring. Compare those branches with the gene basics in the first map.

Build your vocabulary

Genetic Variation is another mind map to explore. It brings together sources and types of variation with terms such as gene, allele, trait and gene pool. It also includes branches on evolution and natural selection. Use those branches to trace connections between terms rather than studying each one on its own.

The Genetic Variation Flashcards deck offers a different way to work through vocabulary. It includes allele, homologous chromosomes, mutation, phenotype and genotype. After checking a term in the deck, return to a mind map and find where it appears in the wider picture.

Practice and follow a question

Once you have explored the maps and flashcards, try the Genes and Variation quiz. If a question is difficult, use the relevant map or cards to revisit the terms before trying again. You can also explore the quiz on genetic variation and its control.

For a more specific example, the notes on genetic variation in bacteria describe mutations, changes in DNA and their possible relationship to antibiotic resistance. The page also lists slides on variation and inheritance, so you can approach the material in another format.

Place the topic in the unit

Genetic Variation is a section of Genetics and Inheritance in Biology and natural sciences. The inheritance and variation resources on this page offer a way to connect the topic with its unit. Choose a resource that fits what you want to work on next.