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.
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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.