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Biology questions with answers

2,759 multiple-choice questions. Open any question for its answer and explanation.

Questions asked in State PSC and UPSC prelims, by topic. Each topic also has notes to read.

Read the notes: Genetic Disorders →

  1. Which one of the following genetic diseases is sex-linked?Asked in UPPCS Prelims 1999
  2. Which of the following is also known as Steinert's Disease ?Asked in Asst. Statistical Officer 2
  3. Ǔनम्नͧलͨखत में से कौन सा आनुवंͧशक रोग है ?Asked in JUNIOR ACCOUNTANT AND TRA 2013
  4. Which of the following is a hereditary disease ?Asked in JUNIOR ACCOUNTANT AND TRA 2013
  5. Which one of the following diseases is caused due to defect in gene ?Asked in Assistant Accountant 2012
  6. Phenylketonuria is an example of A) sexual overstimulation B) bone malfunction C) infectious disease D) inherited disorderAsked in ASSISTANT AUDIT OFFICER 2017 18 2017
  7. Colour blind and Haemophilia diseases of human being are due toAsked in District Statistical Officer Assistant Director 2025
  8. In the context of hereditary diseases, consider the following statements : Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg. A child inherits mitochondrial diseases entirely from mother and not from father. Which of the statements given above is/are correct?Asked in UPSC IAS 2021