WONDER #2370: What is Down Syndrome?

Question 1 of 3

Down syndrome happens when a person has an extra _____________.

  1. DNA strand
  2. chromosome
  3. neuron
  4. protein

Question 2 of 3

What was the main idea of this Wonder?

  1. Chromosomes are small groups of genes that make up our DNA.
  2. The three types of Down syndrome are Trisomy 21, translocation Down syndrome, and mosaic down syndrome.
  3. Down syndrome is a chromosomal disorder that affects people mentally and physically, but it can be treated.
  4. Many people with Down syndrome do well with therapy, and some even become famous.

Question 3 of 3

Which is the best evidence that Down syndrome is not uncommon?

  1. “About 6,000 babies are born with Down syndrome in the U.S. each year. That’s about one in every 700 babies.”
  2. “Babies are born with Down syndrome at a higher rate to mothers 35 or older.”
  3. “Speech, occupational, and physical therapy go a long way toward improving the quality of life for people with Down syndrome.”
  4. “When a person has 47 chromosomes instead of 46, they have Down syndrome.”

Check your answers online at https://www.wonderopolis.org/wonder/what-is-down-syndrome.