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What would a male child share mitochondrial DNA with

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A male child would not share mitochondrial DNA (mtDNA) with his biological father. Mitochondrial DNA is inherited exclusively from the mother. In humans, mitochondria, the energy-producing organelles in our cells, contain their own small set of DNA, which is passed down maternally.

Here's how mitochondrial DNA inheritance works:

A female (the mother) has mitochondria that contain her own mtDNA.

When she has children, she passes her mitochondria, along with her mtDNA, to her offspring.

Male children, in turn, inherit their mother's mitochondria and her mtDNA.

So, a male child would share his mtDNA with his siblings from the same mother, as they would all have inherited mtDNA from the same maternal source. However, a male child will not pass down his mtDNA to his own offspring, as only females can pass on mitochondrial DNA to the next generation.

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