Which of the following is a result of a nondisjunction?

• Klinefleter syndrome

• Sickle cell anemia

• Cystic fibrosis

• Hemophilia

Which of the following best describes the cause of cystic fibrosis?

• a mutated blood clotting protein

• a mutated transport protein

• an extra 21st chromosome

• an extra 13th chromosome

Which of the following is an autosomal recessive disorder?

• Huntington's disease

• sickle cell anemia

• colorblindness

• Hemophilia

Which of the following is a autosomal dominant disorder?

• Huntington's

• Cystic fibrosis

• Hemophilia

• Sickle cell anemia

Which of the following is a sex-linked disorder?

• Hemophilia

• Sickle cell anemia

• Cystic fibrosis

• Huntington's

Which of the following is NOT a chromosomal disorder?

• Turner's syndrome

• Downs syndrome

• Klinefelter's syndrome

• Huntingdon's

Which disorder is treated by restricting milk in the diet?

• phenylketonuria

• cystic fibrosis

• galactosemia

• Tay-Sachs disease

Why is Down syndrome called trisomy 21

• The person has 21 pairs of chromosomes instead of 23.

• The person has an abnormal gene on chromosome 21.

• The syndrome is caused by having 21 pairs of autosomes.

• The syndrome results from an extra chromosome 21.

What is the effect of sickle-cell anemia?

• blocked respiratory pathways

• decreased neurological functions

• inefficient oxygen transportation

• susceptibility to contracting malaria

Which disease or disorder is the result of having an extra chromosome?

• Cystic Fibrosis
• Down Syndrome
• Colorblindness
• Sickle-cell Disease