Down syndrome is caused by the nondisjuction of the chromosome 21.
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<h3>Answer:</h3><h3>Mitochondria and chloroplasts originated from the endosymbiotic association of aerobic (more...) A critical step in the evolution of eukaryotic cells was the acquisition of membrane-enclosed subcellular organelles, allowing the development of the complexity characteristic of these cells.</h3><h3>Hope this is fine for you
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Satellites, I’m assuming this is what you were looking for as it monitors everything.
