Genetic Disorders
Biology ⇒ Genetics and Heredity
Genetic Disorders starts at 9 and continues till grade 12.
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See sample questions for grade 11
A child is born with cystic fibrosis, but neither parent shows symptoms. What does this indicate about the parents' genotypes?
A couple has a child with Tay-Sachs disease. What is the probability that their next child will also have the disease?
A karyotype showing 47 chromosomes with XXY indicates which disorder?
A pedigree shows a trait that appears in every generation and affects both males and females equally. What is the most likely mode of inheritance?
A woman who is a carrier for hemophilia (X-linked recessive) marries a man who does not have hemophilia. What is the probability that their son will have hemophilia?
Describe the genetic cause of Down syndrome.
Describe the inheritance pattern of Duchenne muscular dystrophy.
Describe the main features of Klinefelter syndrome.
Describe the main symptoms of cystic fibrosis.
Describe the role of carrier screening in preventing genetic disorders.
Explain the difference between a gene mutation and a chromosomal mutation.
Explain the difference between autosomal dominant and autosomal recessive inheritance patterns.
Explain why consanguineous marriages increase the risk of autosomal recessive disorders.
Explain why genetic disorders can be difficult to treat.
Hemophilia is more common in males than females. Explain why.
Sickle cell anemia is more common in regions where malaria is prevalent. Explain why this is the case.
Tay-Sachs disease is most commonly found in which population group?
Which enzyme is deficient in individuals with phenylketonuria (PKU)?
