OrganellDNA

OrganellDNA refers to genetic material found within organelles, specifically mitochondria and chloroplasts, in eukaryotic cells. Unlike the primary nuclear DNA, which is inherited biparentally, organelle DNA is typically inherited maternally in most multicellular organisms. This extranuclear DNA is circular in shape, similar to bacterial DNA, and carries a limited number of genes essential for the organelle's function.

Mitochondrial DNA (mtDNA) encodes for proteins involved in cellular respiration, the process of generating energy for the cell. Chloroplast DNA (cpDNA) in plant cells encodes for components of photosynthesis. The small size and distinct inheritance patterns of organellDNA make it a valuable tool for studying evolutionary history, population genetics, and tracing maternal lineages. Mutations in organellDNA can lead to various genetic disorders, often affecting energy-producing tissues like muscles and the brain. Research into organellDNA continues to shed light on cellular biology, disease mechanisms, and the evolutionary relationship between organelles and their prokaryotic ancestors.