ja or Nein

Does nondisjunction mean the failure of chromosomes to correctly separate:

• homologues during meiosis I or

• sister chromatids during meiosis II?

• Ja

• Nein

Is a  Down syndrome  the result of an extra copy of chromosome 21?

• Ja

• Nein

Do people with Klinefelter syndrome have  48, XXY chromosomes?

• Ja

• Nein

Is Patau syndrome (trisomy 12)  and Edward's syndrome (trisomy 19)?

• Ja

• Nein

Do people with genetic disorders need extra love, respect and concern from the society, equal opportunities and additional privileges?

• Ja

• Nein

Down syndrome (trisomy 21) affects 1:700 children and alters the child's phenotype either moderately or severely. What is the probability that a couple could produce a child with Down syndrome?

• 0.0014%

• 0.14%

• 14%

• less than 0.01%

Children with Patau syndrome (trisomy 13) has serious eye, brain, circulatory defects as well as cleft palate. They rarely live more than a few months and affects 1:5000 live births.

Solve for the probability of producing a child with Patau syndrome.

• 0.002%

• 0.02%

• 0.2%

• 2%

Children with Edward's syndrome (trisomy 18) have almost every organ system affected and

generally do not live more than a few months and affects  1:10,000 live births.

Solve for the probability of producing a child with Edward syndrome.

 

• 0.001%

• 0.01%

• 0.1%

• 1%