Question

Chromosomes are made up of:

1. DNA
2. RNA
3. Protein
4. Protein and DNA

Answer (Detailed Solution Below)

Option 4: Protein and DNA

Detailed Solution

Answer: (4) Protein and DNA

Explanation:

Chromosomes are thread-like structures that are made of DNA (deoxyribonucleic acid) and associated proteins. They are present in the nucleus of eukaryotic cells and store genetic information.

Chromosomes play a vital role in the inheritance of traits from one generation to the next. DNA carries the genetic instructions, while proteins help in organizing and supporting the DNA structure.
Humans have 23 pairs of chromosomes in each cell. Out of these, 22 pairs are autosomes and one pair consists of sex chromosomes (X and Y).
Chromosomes are the basic units responsible for genetic continuity, inheritance, and proper cell functioning.

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

Tags: chromosomes question answer

Prafulla Vats

Prafulla Vats is an experienced SEO and content strategist with over 4 years of expertise in driving organic growth across education and service niches. He specializes in crafting data-driven content strategies that help students and professionals access accurate, well-researched information. Through his work, he focuses on improving visibility, engagement, and trust through high-quality, SEO-optimized content.