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CBSE Notes 2011-2012 » XII-Biology

Molecular Basis of Inheritance

In what direction is the leading strand synthesised during DNA synthesis ?

Short answer question

In what direction is the leading strand synthesised during DNA synthesis ?

How many bases will there be in three codons? How many amino acids will this number of bases code fo...

Short answer question

How many bases will there be in three codons? How many amino acids will this number of bases code for ? [Foreign 2003]

Due to an error during transcription, ATG of DNA formed UAG in mRNA. What would happen to the polype...

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Due to an error during transcription, ATG of DNA formed UAG in mRNA. What would happen to the polypeptide chain during translation by this changed mRNA? [Foreign 2003]

While an mRNA strand is being translated in the ribosome subunit, the triplets in sequence were UAC ...

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While an mRNA strand is being translated in the ribosome subunit, the triplets in sequence were UAC and UAG. One of them codes for tyrosine. What is the significance of the other ? Pick out the codon and specify. [Delhi 2003C]

What is the function of amino-acyl-tRNA synthetase ?

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What is the function of amino-acyl-tRNA synthetase ?

What is point mutation? [Foreign 2002]

Short answer question

What is point mutation? [Foreign 2002]

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