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Unraveling the Mystery

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Questions and Answers

Which of the following is the main reason why mitochondrial DNA acquires mutations at a higher rate than nuclear DNA?

It is in close proximity to the electron transport chain. (correct)

It lacks DNA repair mechanisms.

It is exposed to high concentrations of free radicals.

It lacks protective histones.

What is the standard model of inheritance for mitochondrial DNA?

Biparental inheritance

Maternal inheritance (correct)

Paternal inheritance

Random inheritance

Which tissue showed evidence of a single, maternally derived mtDNA haplotype in a patient with mitochondrial myopathy?

Cardiac muscle

Skeletal muscle (correct)

Brain

Liver

Unraveling the Mystery

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Questions and Answers

Which of the following is the main reason why mitochondrial DNA acquires mutations at a higher rate than nuclear DNA?

What is the standard model of inheritance for mitochondrial DNA?

Which tissue showed evidence of a single, maternally derived mtDNA haplotype in a patient with mitochondrial myopathy?

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