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Scientists have found a clue to why one type of dna is passed down to children by their mothers — but not their fathers Nobody fully understands why or how fathers' mitochondrial dna gets wiped from cells. A recent study reveals why most animals, including humans, inherit mitochondrial dna solely from their mothers, showing that retaining paternal mitochondria can harm development and health.

Scientists have long wondered why animals get the dna inside their mitochondria, the cell's energy center, only from their mothers Unlike nuclear dna, which comes from both parents, mitochondrial dna comes only from the mother New research explains why and offers hope for treating mitochondrial disorders.

We inherit mitochondria from our mothers because sperm mitochondria are actively destroyed during fertilization in 99.9% of cases

Now a team from the university of colorado boulder say they've found a clue that could explain our strange lack of dad genes Unlike nuclear dna, which is inherited from both parents, mtdna is inherited exclusively from the mother This unique inheritance pattern is crucial for understanding various aspects of human biology, including energy production, maternal. But mitochondria also support cells in other ways

For example, they help cells maintain the correct concentration of calcium ions, which are involved in blood clotting and muscle contraction Mitochondria are also the only structure in our cells with their own unique dna, which with rare exceptions, is inherited only from mothers. Scientists have long recognized the fact that mitochondrial dna, or mtdna, comes exclusively from egg cells in humans, meaning only the mother contributes the genetic code carried by thousands of. In sexual reproduction, mitochondria are normally inherited exclusively from the mother

The mitochondria in mammalian sperm are usually destroyed by the egg cell after fertilization.

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