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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 This unique inheritance pattern is crucial for understanding various aspects of human biology, including energy production, maternal. 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.
Mitochondrial DNA can be inherited from fathers, not just mothers
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 is inherited from both parents, mtdna is inherited exclusively from the mother New research explains why and offers hope for treating mitochondrial disorders.
Mitochondrial dna is inherited only from the mother because the large female gamete (the egg) contains all the mitochondria for the zygote, while the smaller male gamete (the sperm) does not contribute mitochondria
This process ensures that the vast majority of the offspring’s mitochondria originate only from the mother’s egg cell This systematic elimination ensures a single, maternal line of inheritance for the mtdna Essential functions of mitochondria the genes contained within the mitochondrial dna are directly linked to the cell’s energy supply.
