The gamete cells in groups 1 and 2 in the diagram that have trisomy 21 are the target. Move a single zygote cells to group 2's desired location in the diagram.
The typical lifetime of a person having Down syndrome today is 60 years. A child with Down syndrome had a 25-year lifespan on average as late as 1983.
Up to 6,000 children are born with Down ’s syndrome every year in the U.s, where it affects 1 in 800 newborns. Approximately 85% of babies with Down syndrome are thought to survive to adulthood, and 50% of them do so for more than 50 years.
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