Down syndrome is the most commonly occurring genetic condition in the world. One in every 800 births is a child with Down syndrome, which is approximately 5,000 births per year in the United States alone. Today, Down syndrome affects more than 350,000 people in the United States, and grows every day.
Down syndrome is usually caused by an error in cell division called non-disjunction. Normally, at the time of conception a baby inherits genetic information from its parents in the form of 46 chromosomes: 23 from the mother and 23 from the father. …
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