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Why Do We Inherit Mitochondrial DNA Only From Our Mothers?

Stashed in: Science!, DNA

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Their results, published this week in the journal Science, show that paternal mitochondria in this type of roundworm have an internal self-destruct mechanism that gets activated when a sperm fuses with an egg. Delaying this mechanism, the scientists found, led to lower rates of embryo survival. Down the road, this information could help scientists better understand certain diseases and possibly improve in vitro fertilization techniques.

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