Mitochondrial DNA in most mammals is inherited from the mother only. Explain why?

i need a short and clear answer that dont exceed 3 or 4 lines or:i need a short and clear answer that don't exceed 3 or 4 lines

i need a short and clear answer that don't exceed 3 or 4 lines

or:i need a short and clear answer that don't exceed 3 or 4 lines

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