Mitochondrial dna dating

It typically affects both ears and worsens gradually over time, making it difficult to understand speech and hear other sounds.

These molecules damage mitochondrial DNA, causing a buildup of additional somatic mutations.The mitochondrial genes associated with cytochrome oxidase disrupts oxidative phosphorylation, causing a decrease in ATP production.Researchers believe that impaired oxidative phosphorylation can lead to cell death in tissues that require large amounts of energy, such as the brain, muscles, and heart.Mitochondrial DNA is prone to somatic mutations, which are a type of noninherited mutation.Somatic mutations occur in the DNA of certain cells during a person's lifetime and typically are not passed to future generations.

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