Down Syndrome Quiz

What is Down syndrome?

• A condition caused by a missing chromosome

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

• A disease that affects only the brain

• A temporary condition that resolves with age

Answer explanation

Down syndrome is a genetic condition caused by an extra copy of chromosome 21, leading to developmental and physical challenges. The other options incorrectly describe the condition.

Tags

NGSS.HS-LS3-2

How many chromosomes do people with Down syndrome have?

• 45

• 46

• 47

• 48

Answer explanation

People with Down syndrome typically have an extra copy of chromosome 21, resulting in a total of 47 chromosomes instead of the usual 46. Therefore, the correct answer is 47.

What are some physical characteristics associated with Down syndrome?

• Large ears and long neck

• Slanted, upturned eyes and small ears

• Flat nose bridge and long legs

• Short neck and large hands

Answer explanation

Individuals with Down syndrome often exhibit slanted, upturned eyes and small ears, which are characteristic physical features. The other options do not accurately represent common traits associated with this condition.

How can supportive care impact individuals with Down syndrome?

• It has no impact on their lives

• It can help them lead happy and healthy lives

• It makes their condition worse

• It only affects their physical health

Answer explanation

Supportive care can significantly enhance the quality of life for individuals with Down syndrome by providing emotional, social, and medical support, enabling them to lead happy and healthy lives.

What is Down syndrome?

• A condition where people are born with an extra chromosome

• A condition caused by a virus

• A condition that affects only the elderly

• A condition that is always inherited

Answer explanation

Down syndrome is a genetic condition caused by the presence of an extra chromosome 21. This leads to developmental and physical challenges, making the first answer choice correct.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many chromosomes do people with Down syndrome typically have?

• 44

• 45

• 46

• 47

Answer explanation

People with Down syndrome typically have 47 chromosomes due to an extra copy of chromosome 21, resulting in a total of three copies of this chromosome instead of the usual two.

Who can be affected by Down syndrome?

• Only males

• Only females

• Anyone

• Only people over 50

Answer explanation

Down syndrome can affect anyone, regardless of gender or age. It is a genetic condition that occurs in all populations, making 'Anyone' the correct answer.

What increases the risk of having a child with Down syndrome?

• Younger maternal age

• Older maternal age

• Eating certain foods

• Living in a specific region

Answer explanation

Older maternal age increases the risk of chromosomal abnormalities, including Down syndrome. As women age, the likelihood of errors during cell division rises, leading to a higher chance of having a child with this condition.

How common is Down syndrome in the United States?

• 1 in every 500 babies

• 1 in every 700 babies

• 1 in every 1000 babies

• 1 in every 2000 babies

Answer explanation

Down syndrome occurs in approximately 1 in every 700 live births in the United States, making this the correct choice. The other options are less accurate based on current statistics.

Which of the following is a physical sign of Down syndrome present at birth?

• High muscle tone

• Long neck

• Slanted eyes that point upward

• Large ears

Answer explanation

Slanted eyes that point upward are a characteristic physical sign of Down syndrome present at birth, distinguishing it from the other options listed, which are not typical features.