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The function of tRNA is

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Important Questions on Molecular Basis of Inheritance

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Which one of the following is the start codon?
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
The proportion of nucleotides in a given nucleic acid are adenine: 18%, guanine: 30%, cytosine: 42% and uracil: 10%. Name the nucleic acid and mention the number of strands in it.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations

Observe the figure and answer the questions:

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What is the function of 'A'?

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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
Which one of the following is not applicable to RNA?
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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

Observe the figure and answer the questions:

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Identify the parts A and B.

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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
Write any two chemical differences between DNA and RNA.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Give two functions of RNAs.
HARD
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

Identify P and Q in the following figure?

Question Image

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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.
MEDIUM
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
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
Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?
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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
Describe the clover leaf model of tRNA.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Which one of the following processes in E. coli does not directly involve RNA?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Genetic Code and Gene Mutations
Which of the following statements is correct?

a. rRNA is the most abundant RNA.
b. Ribosomes are composed of approximately 80% rRNA and 20% ribosomal proteins.
c. rRNA is a type of coding RNA.