Written by the Fiveable Content Team โข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated August 2025
Definition
DNA, or deoxyribonucleic acid, is a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms. It consists of two long strands twisted into a double helix structure.
Genes: Genes are segments of DNA that contain specific instructions for producing proteins or performing certain functions within an organism.
Chromosomes: Chromosomes are structures made up of condensed DNA molecules that carry genes. They can be found in the nucleus of cells.
Genetic Variation: Genetic variation refers to differences in the genetic makeup between individuals or populations. It contributes to diversity within species and plays a role in evolution.