Down Syndrome Quiz

What is Down syndrome?

• A condition where a person is born with an extra copy of chromosome 21

• A condition that affects only adults

• A condition caused by a virus

• A type of cancer

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Who first described the characteristics of Down syndrome?

• John Langdon Down

• Jérôme Lejeune

• Gregor Mendel

• Charles Darwin

What is the most common type of Down syndrome?

• Translocation Down syndrome

• Mosaic Down syndrome

• Trisomy 21

• None of the above

How many chromosomes do individuals with trisomy 21 have?

• 47

• 46

• 45

• 44

What percentage of Down syndrome cases are due to translocation?

• 1%

• 4%

• 100%

• 95%

Which type of Down syndrome is the rarest?

• Trisomy 21

• None of the above

• Translocation Down syndrome

• Mosaic Down syndrome

What is the total number of chromosomes in cells with translocation Down syndrome?

• 44

• 45

• 47

• 46

Who discovered that Down syndrome is a chromosomal disorder?

• Gregor Mendel

• Jérôme Lejeune

• Charles Darwin

• John Langdon Down

Tags

NGSS.HS-LS3-1

What is the medical term for the presence of an extra copy of a chromosome?

• Trisomy

• Monosomy

• Pentaploidy

• Tetrasomy

Approximately how many children are born with Down syndrome each year in the United States?

• 1 in 700

• 1 in 1000

• 1 in 100

• 1 in 500