Genetics

Learn how traits are inherited through DNA, genes, chromosomes, and patterns of heredity.

DNA as the Genetic Material

Explore the experiments and evidence that established DNA as the molecule of heredity.


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Alleles and Inheritance Patterns

Study how multiple alleles, codominance, and incomplete dominance affect traits.


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Sex - linked and autosomal inheritance

Discover how traits linked to sex chromosomes and non-sex chromosomes are passed down differently in males and females.


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Mutations

Learn how changes in DNA sequence affect proteins, traits, and genetic stability.


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Genetic Disorders

Explore examples of inherited disorders caused by gene mutations or chromosomal abnormalities.


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Mendelian genetics and Punnett squares

Understand Gregor Mendel’s laws and how traits are inherited in predictable patterns.


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Pedigree Analysis

Learn to analyze family trees to track genetic traits across generations.


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Population Genetics

Study how allele frequencies change in populations due to mutation, selection, drift, and migration.


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Selective Breeding and Genetic Variation

Understand how humans influence heredity through artificial selection and explore the importance of genetic diversity.


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Ready to take IJSO-style genetics practice questions?

Apply your knowledge with our collection of IJSO-style genetics problems.

View Genetics Practice Questions
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Ready to take IJSO-style genetics mock tests?

Challenge yourself with our collection of IJSO-style mock tests in genetics, designed to test your problem-solving skills and understanding.

View Genetics Mock Tests