Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
Molecular genetics is the field of biology and genetics that studies the structure and function of genes at a molecular level. It primarily focuses on how genes are transferred from generation to generation.
The complete set of genes or genetic material present in a cell or organism.
DNA (Deoxyribonucleic Acid): The molecule that carries genetic instructions used in growth, development, functioning and reproduction of all known living organisms and many viruses.
Chromosome: A thread-like structure consisting largely of DNA, which carries genetic information in the form of genes.