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Mitochondrial dna

Mitochondrial dna

Name: Mitochondrial dna

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Mitochondrial DNA is the small circular chromosome found inside mitochondria. These organelles found in cells have often been called the powerhouse of the cell. The mitochondria, and thus mitochondrial DNA, are passed only from mother to offspring through the egg cell. 4 days ago Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA. This genetic material is known as mitochondrial DNA or mtDNA. In contrast to the human nuclear genome, which consists of billion base pairs of DNA, the human mitochondrial genome is built of a mere 16, base pairs.

Mitochondrial DNA is inherited only from the mother, and there's a lot we can learn starting from this basic fact. Our mitochondrial DNA accounts for a small portion of our total DNA. It contains just 37 of the 20, to 25, protein-coding genes in our body. But it is notably distinct from DNA in the nucleus. Unlike nuclear DNA, which comes from both parents, mitochondrial DNA comes only from the mother. Unlike most of our DNA, mitochondrial DNA is not found in our chromosomes or even in the nucleus (the central enclosure that contains all of the chromosomes) .

The organelles contain their own genome with a modified genetic code. The mammalian mitochondrial genome is transmitted exclusively through the female . Publication history. Currently known as: Mitochondrial DNA Part A: DNA Mapping , Sequencing, and Analysis ( - current). Formerly known as. Mitochondrial.

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