MEDIUM
12th CBSE
IMPORTANT
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In E. coli, the lac operon gets switched on when

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Important Questions on Molecular Basis of Inheritance

EASY
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 1
In a DNA strand, the nucleotides are linked together by
EASY
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 1
Which of the following is true with respect to AUG?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 1
If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 3
What is Chargaff’s rule?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 4

Name the components ‘a’ and ‘b’ in the nucleotide with a purine, given below.

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MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 5

Given below is a part of the template strand of a structural gene:

TAC CAT TAG GAT    

Write its transcribed mRNA strand with its polarity.

MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 5

Given below is a part of the template strand of a structural gene:

TAC CAT TAG GAT    
Explain the mechanism involved in the initiation of transcription of this strand.
 

HARD
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 6 - Molecular Basis of Inheritance>SELF-ASSESSMENT TEST>Q 6
Draw a neat labelled sketch of a replicating fork of DNA.