Acme Ai
A
अ
GS Paper IUPSC Prelims 1999
Health & Medicine
Question No. 492Interactive Test Mode
00:00
+2-0.66

Q492. Which one of the following genetic diseases is sex-linked?

Which one of the following genetic diseases is sex-linked?

Select the correct option below (or cross out options to eliminate)
PrevNext Question

Official Answer Key & Detailed Solution

3D PYQ Realm

Ready to check the official UPSC Answer Key?

Click any option above to test yourself under exam conditions, or reveal the explanation directly.

Official UPSC Answer KeyUPSC Prelims 1999 • Science and Technology

Correct Answer: Option (A) — Royal haemophilia

Concept & Option Breakdown

Standard Reference Verified

Haemophilia (often called 'Royal Haemophilia' due to its prevalence in European royal families tracing back to Queen Victoria) is an X-linked recessive genetic disorder. Tay-Sachs disease and Cystic fibrosis are autosomal recessive disorders.

Reviewed by Avinash Sir & Acme AI Research Team

Practice Full-Length & Sectional Prelims Mocks on this Interface

50 simulated tests in the APT Prelims Test Series (₹1,493) or 1-on-1 Mentorship with Avinash Sir.

1-on-1 MentorshipOpen Test Platform

Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1999 (Q492)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — Royal haemophilia

Related & Repeated Prelims PYQs (1)

Questions from other UPSC Prelims years testing the same or closely linked concept.

View Cluster in 3D Graph
1998 • Q49982% Match

Haemophilia is a genetic disorder which leads to:

Science and Technology • Health & MedicineSolve

More PYQs from Science and Technology (Health & Medicine)

Master the Science and Technology syllabus cluster by practicing these related previous year questions.

View All Science and Technology PYQs
2020 • Q68Health & Medicine

With the present state of development, Artificial Intelligence can effectively do which of the following? 1. Bring down electricity consumption in ind

Science and TechnologyPractice
2020 • Q69Health & Medicine

With reference to Visible Light Communication (VLC) technology, which of the following statements are correct? 1. VLC uses electromagnetic spectrum wa

Science and TechnologyPractice
2020 • Q70Health & Medicine

In India, under cyber insurance for individuals, which of the following benefits are generally covered, in addition to payment for the loss of funds a

Science and TechnologyPractice
2020 • Q71Health & Medicine

With reference to “Blockchain Technology” consider the following statements: 1. It is a public ledger that everyone can inspect but which no single us

Science and TechnologyPractice
2020 • Q163Health & Medicine

Which of the following statements are correct regarding the general difference between plant and animal cells? 1. Plant cells have cellulose cell wall

Science and TechnologyPractice
2020 • Q164Health & Medicine

In the context of recent advances in human reproductive technology. “Pronuclear Transfer” is used for

Science and TechnologyPractice
2020 • Q165Health & Medicine

With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible p

Science and TechnologyPractice
2020 • Q166Health & Medicine

With reference to the current trends in the cultivation of sugarcane in India, consider the following statements: 1. A substantial saving in seed mate

Science and TechnologyPractice

Frequently Asked Questions — UPSC Prelims 1999 Q492

What is the official answer for UPSC Prelims 1999 GS Paper I Question 492 (Science and Technology)?

The official UPSC answer key for this 1999 Science and Technology (Health & Medicine) question is Option (A): "Royal haemophilia". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1999 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

To solve Health & Medicine questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

Beyond Previous Year Questions

Structured Prelims Practice & Mentorship

Pair previous year question analysis with full-length simulated mock tests and 1-on-1 faculty guidance.

APT 2027 • 50 Prelims Tests17% OFF

Acme Prelims Test Series (APT)

Built to eliminate 1/3rd negative marking losses and 50–50 option traps through structured simulation and NCERT-backed keys.

  • 50 High-Yield Tests: Subject Sectionals, Current Affairs, CSAT Paper II & Full-Length Simulators
  • 1/3rd Penalty & Trap Analytics: Identify whether marks are lost to over-attempting or conceptual gaps
  • Option-by-Option NCERT Keys: Detailed distractor analysis and elimination logic for every question
  • Custom PDF-to-Mock Generator: Convert your revision notes or current affairs PDFs into practice tests
Complete 50-Test Package
₹1,493₹1,799• Valid till Prelims 2027
Explore APT Test SeriesTry Free Mock
1-on-1 Personal MentorshipCapped at 10 Seats

1-on-1 UPSC Mentorship with Avinash Sir

Weekly 1-on-1 strategy reviews, daily study accountability, and personalized MCQ attempt audits with an experienced UPSC mentor.

  • Weekly 1-on-1 Sessions: Direct mentorship with Avinash Sir (Former Plutus IAS Mentor, UPSC & UPPCS Mains Written)
  • APT 50-Test Series Included: Full Prelims GS1 & CSAT test series bundled at no additional cost
  • Mock Attempt & Elimination Audit: Question-by-question review to calibrate your risk and attempt accuracy
  • Prelims & Integrated Tracks: Available as dedicated Prelims mentorship or end-to-end Prelims + Mains guidance
Prelims & Integrated Tracks
17% OFF• Includes APT 50-Test Series
Explore 1-on-1 MentorshipCompare Tracks
Previous QuestionMatch List-I (Drugs/Chemicals) with List -II (Their uses) and select the correct answer using the codes given below: | List-I | List-II | | :--- | :--- | | A. Atropine | 1. Local anaesthesia | | B. Ether | 2. Heart trouble | | C. Nitroglycerine | 3. Dilation of pupil | | D. Pyrethrin | 4. Mosquito control | Codes:
Next QuestionLathyrism is caused by excessive consumption of: