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 MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance with Answer Keys
MCQ Questions for Class 12 Biology Chapter 6 Question No 1:
In a DNA strand the nucleotides are linked together by
Option A : Glycosidic bonds
Option B : Phosphodiester
Option C : Peptide bonds
Option D : Hydorgen bonds
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Option B : Phosphodiester
MCQ Questions for Class 12 Biology Chapter 6 Question No 2:
The net electric charge on DNA and histones is
Option A : Both positive
Option B : Snails
Option C : Negative and positive, respectively
Option D : Zero
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Option C : Negative and positive, respectively
MCQ Questions for Class 12 Biology Chapter 6 Question No 3:
The first genetic material could be
Option A : Protein
Option B : Cabohydrates
Option C : DNA
Option D : RNA
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Option D : RNA
MCQ Questions for Class 12 Biology Chapter 6 Question No 4:
The human chromosome with the highest and least number of genes in them are respectively
Option A : Chromosome 21 and Y
Option B : Chromosome 1 and X
Option C : Chromosome 1 and Y
Option D : Chromosome X and Y
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Option C : Chromosome 1 and Y
MCQ Questions for Class 12 Biology Chapter 6 Question No 5:
Control of gene expression takes place at the level of
Option A : DNA- replication
Option B : Transcription
Option C : Translation
Option D : None of the above
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Option B : Transcription
MCQ Questions for Class 12 Biology Chapter 6 Question No 6:
The amino acid attaches to the tRNA at its
Option A : 5′- end
Option B : 3′ – end
Option C : Anticodon site
Option D : DHUloop
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Option B : 3′ – end
MCQ Questions for Class 12 Biology Chapter 6 Question No 7
If a double stranded DNA has 20% of cytosine what will be the percentage of adenine in it?
Option A : 20%
Option B : 40%
Option C : 30%
Option D : 60%
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Option C : 30%
MCQ Questions for Class 12 Biology Chapter 6 Question No 8:
How far is each base pair from the next one in DNA double helix model?
Option A : 2 nm
Option B : 3.4 nm
Option C : 34 nm
Option D : 0.34 nm
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Option D : 0.34 nm
MCQ Questions for Class 12 Biology Chapter 6 Question No 9:
Histone proteins are
Option A : Basic, negatively charged
Option B : Basic, Positively charged
Option C : Acidic, positively charged
Option D : Acidic, negatively charged
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Option B : Basic, Positively charged
MCQ Questions for Class 12 Biology Chapter 6 Question No 10:
The structure in chromatin seen as ‘beads-on string’ when viewed under election microscope are called
Option A : Nucleotides
Option B : Nucleosides
Option C : Histone octamer
Option D : Nucleosomes
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Option D : Nucleosomes