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(genetics) mitochondrial genome

Mitochondrial DNA is the small circular chromosome found inside mitochondria. These organelles, found in most eukaryotic cells, are the powerhouse of the cell. The mitochondria, and thus mitochondrial DNA, are passed exclusively from mother to offspring through the egg cell.

(genetics) mitochondrial genome

Schematic karyogram showing the human genome, with 23 chromosome pairs as well as the mitochondrial genome (to scale at bottom left, annotated "MT"). Its genome is relatively tiny compared to the rest, and its copy number per human cell varies from 0 (erythrocytes) up to 1,500,000 (oocytes).