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12th CBSE
IMPORTANT
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If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be

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Important Questions on Molecular Basis of Inheritance

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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 26
The amino acid attaches to the tRNA at its
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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 27
To initiate translation, the mRNA first binds to
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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 28
In E.coli, the lac operon gets switched on when
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>VERY SHORT ANSWER TYPE QUESTIONS>Q 1
What is the function of histones in DNA packaging?
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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>VERY SHORT ANSWER TYPE QUESTIONS>Q 2
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>VERY SHORT ANSWER TYPE QUESTIONS>Q 3
The enzyme DNA polymerase in E.coli is a DNA dependent polymerase and also has the ability to proofread the DNA strand being synthesised. Explain. Discuss the dual polymerase.
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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>VERY SHORT ANSWER TYPE QUESTIONS>Q 4
What is the cause of discontinuous synthesis of DNA on one of the parental strands of DNA? What happens to these short stretches of synthesised DNA?
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12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>VERY SHORT ANSWER TYPE QUESTIONS>Q 5

Given below is the sequence of coding strand of DNA in a transcription unit.
3' – AATGCAGCTATTAGG – 5’

Write the sequence of its complementary strand.