Question

Who discovered DNA?

  1. 1. Johannsen
  2. 2. Friedrich Miescher
  3. 3. Hargovind Khurana
  4. 4. None of the above

Answer (Detailed Solution Below)

Option 2: Friedrich Miescher

Detailed Solution

The correct answer is Friedrich Miescher.

In the late 1800s, Swiss biochemist Frederich Miescher discovered DNA. However, it took nearly a century for scientists to figure out the structure of the DNA molecule and realize its significance in biology.

James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin demonstrated the significance of DNA in 1953. These scientists discovered the double helix structure of DNA by studying X-ray diffraction patterns and building models.

This structure allows DNA to carry biological information from generation to generation.

Deoxyribonucleic Acid (DNA) is the molecule that carries the genetic information for an organism's development and function. DNA is made up of two linked strands that wind around each other to form a twisted ladder shape known as a double helix. The majority of DNA is found in the cell nucleus (referred to as nuclear DNA), but a small amount can also be found in the mitochondria. DNA is essential in all living things for inheritance, protein-coding, and providing instructions for life and its processes.

Latest UPSC Exam 2026 Updates

Last updated on July, 2026

UPSC Prelims Result 2026 is now out.

UPSC IFoS Prelims Result 2026 is now out.

→ Enroll in Vajiram & Ravi’s UPSC Mains Test Series 2026 for structured answer writing practice, expert evaluation, and exam-oriented feedback.

→ Join Vajiram & Ravi’s UPSC Mentorship Program 2026 for personalized guidance, strategy planning, and one-to-one support from experienced mentors.

→ Join Vajiram & Ravi’s UPSC Mentorship Program 2027 for personalized guidance, strategy planning, and one-to-one support from experienced mentors.

UPSC Prelims Provisional Answer Key 2026 out for GS Paper 1 and CSAT.

UPSC Prelims Question Paper 2026 Out, Download GS Paper 1 PDF conducted on 24th May 2026.

UPSC Mains 2026 will be conducted from 21st August 2026 onwards, and UPSC Prelims 2027 will be held on 23rd May 2027.

UPSC Final Result 2025 is now out.

→ UPSC has released UPSC Toppers List 2025 with the Civil Services final result on its official website.

Anuj Agnihotri secured AIR 1 in the UPSC Civil Services Examination 2025.

UPSC Notification 2026 & UPSC IFoS Notification 2026 is now out on the official website at upsconline.nic.in.

UPSC Calendar 2027 has been released.

→ Check out the latest UPSC Syllabus 2026 here.

→ The UPSC Selection Process is of 3 stages-Prelims, Mains and Interview.

Shakti Dubey secures AIR 1 in UPSC CSE Exam 2024.

→ Also check Best UPSC Coaching in India

Vajiram Content Team
Vajiram Content Team
UPSC GS Course 2026
UPSC GS Course 2026
₹1,80,000
Enroll Now
GS Foundation Course 2 Yrs
GS Foundation Course 2 Yrs
₹2,45,000
Enroll Now
UPSC Mentorship Program
UPSC Mentorship Program
₹85000
Enroll Now
UPSC Sureshot Mains Test Series
UPSC Sureshot Mains Test Series
₹29500
Enroll Now
Prelims Powerup Test Series
Prelims Powerup Test Series
₹14000
Enroll Now
Enquire Now