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JAC 12th Biology Important Questions Chapter 6: Molecular basis of Inheritance

By: Vikash Kumar

On: June 24, 2025

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JAC 12th Biology Important Questions Chapter 6 : झारखण्ड बोर्ड कक्षा 12th सभी विद्यार्थियों के लिए Biology में Chapter 6 Molecular basis of inheritance के पिछले वर्षो में जो भी प्रश्न पूछे गए हैं, उनकी चर्चा हम इसमें करेंगे तो इन Important Questions को पढ़ लीजिए.

Jac 12Th Biology Important Questions Chapter 6: Molecular Basis Of Inheritance
Jac 12Th Biology Important Questions Chapter 6: Molecular Basis Of Inheritance

JAC 12th Biology Important Questions Chapter 6: Molecular basis of Inheritance

विद्यार्थी इसका उत्तर स्वयं करें। ये सारे प्रश्न आपके परीक्षा (JAC 12th Biology Important Questions For Board Exams) में बार – बार पूछे जा रहे है। इसमें आपको सभी Chapter का अलग-अलग पिछले 16 वर्षों के महत्वपूर्ण प्रश्न मिलेंगे। यानि 2006-2020 इसमें आपको ये भी बताया जा रहा है कि कौन से प्रश्न किस तरह से एवं कितने Biology के पूछे जा रहें है.

Name of OrganisationJharkhand Academic Council Ranchi
CategoryImportant Question
StateJharkhand
Question TypesPrevious Year & Important Questions
Class12th(Inter)
StreamScience
SubjectBiology
Chapter6th Chapter
Chapter NameMolecular Basis of Inheritance
TelegramJoin Us

JAC 12th Biology Previous years Important Questions Chapter 6

Chapter 6. Molecular Basis of Inheritance.
1 marks questions

Q1.Name the scientist who initially developed the technique of DNA-fingerprinting [JAC2009]
Q2. The mole percentage of adenine in a double standard DNA is 30. What will be the mole percentage of cytosine in the DNA?
a) 10
b) 20
c) 30
d) 60 [JAC2014]
Q3. Translation with formation of:-
a) mRNA
b) Hormones
c) Proteins
d) tRNA [JAC2014]

Q4. Circular DNA is found in:-
a) Mitochondria
b) Virus
c) Amoeba
d) Lysosome[JAC2015]
Q5.who had coined the term ‘Mutation’?
a) Morgan
b) Hugo de vries
c) Alexander Flemming
d) Dixon and jolly [JAC2015]
Q6. Watson and Crick proposed the scheme for replication of DNA known as:-
a) Conservative DNA replication
b) Transcription
c) Dispersive DNA replication
d) Semi-conservative DNA replication[JAC2015]
Q7.DNA nucleotide contains :-
a) Ribose sugar
b) Glucose
c) Fructose

d) Deoxyribose sugar [JAC2015]
Q8. The phenomenon in which a single gene controls two or more characters in is known as:-
a) Pleotropism
b) Atavism
c) Pseudoallelism
d) Polymorphism [JAC2017]
Q9. What is the distance between two strands of DNA?
a) 34A°
b) 20A°
c) 10A°
d) 9.8A° [JAC2018]
Q10.Uracil is present in:-
a) DNA
b) Protein
c) RNA
d) Sugar [JAC2019]

Q11. An enzyme catalyzing the removal of nucleotides from the end of DNA is:-
a) Endonuclease
b) Exonuclease
c) DNA ligase
d) Helicase [JAC2020]
Q12. The book’ Origin of Species ‘was written by:-
a) Malthus
b) Haldane
c) Darwin
d) Lamarck [JAC2020]

2 Marks Questions

Q1.Define ‘exon’? .[JAC2009,2013,2019]
Q2.Name the pyramidins of DNA molecule. [JAC2012]
Q3.Name the nitrogen base of DNA.[JAC2013]
Q4.DNA finger printing requires….Satellite DNA. This region has…………….. repeats (fill in the blanks) [JAC2013]

Q5. What is the function of DNA ligase? [JAC2015]
Q6. Write the names of purine and pyrimidine bases in a DNA nucleotide. [JAC2015]
Q7. In Central dogma, RNA is formed from replicated DNA by………….. and protein is synthesized from RNA by…… ….[JAC2016]
Q8. Write the main difference of DNA and RNA. [JAC2017]

Q9. Describe the different types of nucleic acid and write the differences between them.[JAC2017]
Q10. Write the names of two nucleic acids. [JAC2020]

3 Marks Question

Q1. What is transcription? What is the product of transcription. [JAC2010]
Q2. Describe the process of DNA replication. [JAC2012,2013]
Q3. Give the structure of nucleosome?[JAC2013]
Q4. Label the diagram given below:- [JAC2015]

Q5. Match the terms in column A with suitable terms in column B. [JAC2016]
ColumnA

  1. central Dogma
  2. DNA
  3. RNA
    Column B
    a) Watson and Crick
    b) F. H. C Crick
    c) AUG

Q6. Label the diagram given below:- [JAC2018]

Q7. Write the names of A B and C in the following picture:-[JAC2020]

Img 20221207 Wa0004
Jac 12Th Biology Important Questions Chapter 6: Molecular Basis Of Inheritance 3

5 marks question

Q1. Describe the structure of polynucleotide of DNA. [JAC, 2009,2011,2012,2017,2020]
Q2. Salient feature of double helix of DNA. [JAC2009]
Q3. In brief describe semi-conservative replication of DNA with the help of suitable diagram. [JAC2013]

Q4. How did Hershey and Chase prove that DNA is a genetic material? [JAC2013]
Q5. Write in detail the process of semiconservative replication of DNA. [JAC2020]

Fill in the blanks

1.Primase …> RNA primer
2.Ligase…….> join broken pieces of DNA
3.RNA polymerase…….> Transcription of RNA
4.Okazaki fragments…. >Broken pieces of DNA strands

  1. Helicase……….. > Separation of DNA strands [JAC2014]
    6.Replication …….. > DNA
  2. Histones………>Proteins
    8.DNA……..> Nucleotides
    9.Transcription…. > m-RNA
    10.Replication….……> DNA
Conclusion

उम्मीद करते हैं या आर्टिकल (JAC 12th Biology Important Questions Chapter 6) आपको पसंद आया होगा अगर आया हो तो कृपया करके अपना प्यारा सा कंमेंट नीचे कर दे उसके साथ ही अधिक अपडेट जानने के लिए हमारे टेलीग्राम ग्रुप में ज्वाइन कर ले.

Vikash Kumar

Hello, I am Vikash Kumar, the owner of this website from Jharkhand. I have over three years of experience in blogging. On this website, you will find blogs in various categories, including job postings, educational news, JAC Board All updates, Like Results, Model Paper or Any kind of info related to the Jac Board, CBSE, JSSC, JPSC, Jharkhand Jobs I have been blogging for the past four years and have explored multiple niches. If you wish to contact me, please reach out via jharkhandlab3@gmail.com. Thank you!

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