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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 The father contributed the other part of the chromosomes. 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.
Now a team from the university of colorado boulder say they've found a clue that could explain our strange lack of dad genes Because of this it was recently possible to make a baby with 3 parents, where one woman contributed the chromosomes and another one the egg cytoplasm with mitochondria Mitochondrial dna (mtdna) is inherited maternally across animals, yet the evolutionary rationale behind this unusual mode of inheritance remains a longstanding mystery
Scientists have long wondered why animals get the dna inside their mitochondria, the cell's energy center, only from their mothers
New research explains why and offers hope for treating mitochondrial disorders. During this event, the egg cell contributes the vast majority of the cytoplasm to the newly formed zygote, and within this cytoplasm reside thousands of the mother's mitochondria. 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. Unlike nuclear dna, which comes from both parents, mitochondrial dna comes only from the mother Nobody fully understands why or how fathers' mitochondrial dna gets wiped from cells. 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.
The cytoplasm contains mitochondria and that's why the baby only inherits them from the mother
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