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HCS (Haryana)Prelims2022General Studies

Question

Which of the following group of diseases comprises genetic diseases?

Options

  1. A Sickle cell anemia, AIDS, Down syndrome
  2. B AIDS, Hepatitis B, Cancer
  3. C Haemophilia, Hepatitis B, Colour blindness
  4. D Sickle cell anemia, Haemophilia, Down syndrome
Show Answer

Correct Answer

D Sickle cell anemia, Haemophilia, Down syndrome

Model Answer

Genetic Disorders

  • An illness characterized by one or more anomalies in the genome is referred to as a genetic condition.
  • It can be brought on by a chromosomal aberration, a mutation in a single gene (monogenic), a number of genes (polygenic), or both.
  • The phrase is typically used when addressing disorders having a single genetic origin, either in a gene or chromosome.
  • De novo mutations occur spontaneously before embryonic development, while autosomal recessive inheritances come from a parent.

Examples:

  • Haemophilia, is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding.
  • Sickle cell disease (SCD) is a group of blood disorders typically inherited. The most common type is known as sickle cell anaemia. It results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells.
  • Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. This extra genetic material causes the developmental changes and physical features of Down syndrome.
  • Colour blindness is also a genetic disorder in which you are unable to see colours normally.

Syllabus topics

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2022 — Which of the following group of diseases comprises genetic… | Dr. Amit IAS Academy