EASY
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Write the salient features of genetic code.

Important Questions on Molecular Basis of Inheritance

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
In Escherichia coli, how many codons codes for the standard amino-acids?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
There are 1998 bases in RNA that codes 666 amino acids and the base position at 901 is deleted such that the length of the RNA becomes 1997 bases. The number of codons altered are
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Find the nucleotide sequence of the mRNA which codes for the sequence of amino acids Met'-Leu-Val-Arg-Ala' and choose the correct option from below:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Statement I: The codon 'AUG' codes for methionine and phenylalanine.
Statement II: 'AAA' and 'AAG' both codons code for the amino acid lysine.
In the light of the above statements, choose the correct answer from the options given below.
HARD
Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
A new life form discovered on a distant planet has a genetic code consisting of five unique nucleotides and only one stop codon. If each codon has four bases, what is the maximum number of unique amino acids this life form can use?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
A mature mRNA consists of 900 bases without any stop codon in between. Calculate the number of amino acids coded by the mRNA during translation.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations

The codon on mRNA are

CAU-CCU-AAA-CUG

Identify the correct sequence of amino acids.

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations

Give the significant contribution of the following scientist:

G. Gamow

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Under which of the following conditions will there be no change in the reading frame of the following mRNA?
5’AACAGCGGUGCUAUU 3’
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
The codon which codes for methionine and also acts as initiator codon          
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
In a random DNA sequence, what is the lowest frequency of encountering a stop codon?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Codon degeneracy means that
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
In an In-vitro translation experiment, poly (UC) RNA template produced poly (Ser-Leu), while poly (AG) RNA template produced poly (Arg-Glu) polypeptide. Which ONE of the following options represents correct interpretations of the codons assignments for Ser, Leu, Arg and Glu?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Which ONE of the following statements is INCORRECT for translation in cytoplasm?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
_____ is a starting codon.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Write any three characteristics of the genetic code.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?
HARD
Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
If DNA codons are ATG GAA, insertion of thymine after the first codon results in:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
If molecular weight of a polypeptide is 15.3 kDa, what would be the minimum number of nucleotides in the mRNA that codes for this polypeptide? Assume that molecular weight of each amino acid is 90 Da.