If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Biology Chapterwise. In this article of AKVTutorials, you will get Molecular Basis of Inheritance CBSE Class 12 Biology MCQ Questions with Answer Keys
MCQ Questions for Class 12 Biology Chapter 6 Question No 11:
Find out the wrong statement about heterochromatin
Option A : It is densely packed
Option B : It stains dark
Option C : It is transcriptionally active
Option D : It is late replicating
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Option C : It is transcriptionally active
MCQ Questions for Class 12 Biology Chapter 6 Question No 12:
The three codons which result in the termination of polypeptide chain synthesis are
Option A : UAA, UAG, GUA
Option B : UAA, UAG, UGA
Option C : UAA, UGA, UUA
Option D : UGU, UAG, UGA
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Option B : UAA, UAG, UGA
MCQ Questions for Class 12 Biology Chapter 6 Question No 13:
The mutations that involve addition, deletion or substitution of a single pair in a gene are referred to as
Option A : Point mutations
Option B : Lethal mutations
Option C : Silent mutations
Option D : Retrogressive mutations
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Option A : Point mutations
MCQ Questions for Class 12 Biology Chapter 6 Question No 14:
Sickle cell anemia results from a single base substitution in a gene, thus it is an example of
Option A : Point mutation
Option B : Frame-shift muttion
Option C : Silent mutation
Option D : Both (a) and (b)
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Option A : Point mutation
MCQ Questions for Class 12 Biology Chapter 6 Question No 15:
RNA is the genetic material in
Option A : Prokaryotes
Option B : Eukaryotes
Option C : Tabacco Mosaic Virus (TMV)
Option D : E.coli
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Option C : Tabacco Mosaic Virus (TMV)
MCQ Questions for Class 12 Biology Chapter 6 Question No 16:
Which of the following phenomena was experimentally proved by Meselson and Stahl?
Option A : Transformation
Option B : Transduction
Option C : Semi-conservative DNA replication
Option D : Central dogma
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Option C : Semi-conservative DNA replication
MCQ Questions for Class 12 Biology Chapter 6 Question No 17
First experimental proof for semi-conservative DNA replication was shown in
Option A : Streptococcus pneumoniae
Option B : Escherichia coli
Option C : Neurospora crassa
Option D : Rattus rattus
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Option B : Escherichia coli
MCQ Questions for Class 12 Biology Chapter 6 Question No 18:
DNA replication takes place at _________ phase of the cell cycle
Option A : G1
Option B : S
Option C : G2
Option D : M
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Option B : S
MCQ Questions for Class 12 Biology Chapter 6 Question No 19:
The process of copying genetic information from one strand of DNA to RNA is termed as
Option A : Replication
Option B : Transcription
Option C : Translation
Option D : Reverse transcription
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Option B : Transcription
MCQ Questions for Class 12 Biology Chapter 6 Question No 20:
Polycistronic messenger RNA (mRNA) usually occurs in
Option A : Bacteria
Option B : Prokaryotes
Option C : Eukaryotes
Option D : Both (a) and (b)
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Option B : Prokaryotes