Learn about the science of genetics, the study of heredity and genes, from ancient to modern times. Explore the discoveries, theories, and applications of genetics in biology, medicine, and biotechnology.

This chapter provides fundamental information about basic genetics concepts, including cell structure, the molecular and biochemical basis of disease, major types of genetic disease, laws of inheritance, and the impact of genetic variation.

Learn what genetics is, how it evolved from Mendel's pea plants to gene sequencing, and how it affects biology and medicine. Test your knowledge with quizzes and examples of genetic discoveries and applications.

Learn the basics of genetics, the study of genes and how they work. Find out how genes are inherited, how they are made of DNA, and how they can change or mutate.

Learn how genes and traits are passed down from one generation to the next, and how DNA is the chemical that tells cells what to do. Explore the history and science of genetics, from Mendel's peas to genomics, and discover how genes affect our health, appearance, and personality.

Genes are specific sequences of bases that encode instructions on how to make proteins. The DNA sequence is the particular side-by-side arrangement of bases along the DNA strand (e.g., ATTCCGGA). Each gene has a unique DNA sequence.

Learn about the science of genetics, the study of genes and how traits are inherited. Explore the history of genetics, from Mendel's experiments to DNA discovery, and how it relates to evolution and extinction.