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 12
A child is born with cystic fibrosis. Both parents are healthy. What is the genotype of the parents?
A couple has a child with Tay-Sachs disease, an autosomal recessive disorder. What is the probability that their next child will also have the disease?
A karyotype shows 47 chromosomes, including two X chromosomes and one Y chromosome. What is the likely diagnosis?
A newborn is diagnosed with phenylketonuria (PKU). What dietary change is recommended to prevent symptoms?
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 pedigree shows a trait that skips generations and affects 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 how genetic testing can be used to diagnose genetic disorders.
Describe the difference between autosomal dominant and autosomal recessive inheritance patterns.
Describe the main difference between a gene mutation and a chromosomal mutation.
Describe the role of genetic counseling in managing genetic disorders.
Explain the concept of carrier status in autosomal recessive disorders.
Explain why consanguineous marriages increase the risk of autosomal recessive disorders.
Explain why genetic disorders caused by dominant alleles are less likely to skip generations than those caused by recessive alleles.
Explain why males are more likely to express X-linked recessive disorders than females.
