Two sets of parents who have children with Down syndrome meet at a clinic. The Williams know that their son has trisomy 21. The Millers have two affected children and Mrs. Miller has had two miscarriages. Why should the Millers be more concerned about future reproductive problems than the Williams? How did Down syndrome occur in each of these families?

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The Answer of Two sets of parents who have children with Down syndrome meet at a clinic. The Williams know that their son has trisomy 21. The Millers have two affected children and Mrs. Miller has had two miscarriages. Why should the Millers be more concerned about future reproductive problems than the Williams? How did Down syndrome occur in each of these families?

Two Sets of Parents Who Have Children with Down Syndrome