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Earn 100
Assume that there are 6 types of nitrogen bases available and 40 types of amino acid are available for protein synthesis, then in the genetic code, each codon will be made up by minimum how many nitrogen bases:-
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Important Questions on Molecular Basis of Inheritance
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In a segment of kilobases are present. If segment has adenine molecules, then what will be the number of cytosine?
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Which statement is correct?
(a) Degeneracy of code is related to the third member of codon.
(b) Single codon, codes for more than one amino acid.
(c) In the codon first two bases are more specific.
(d) In codons, the third base is wobble.
(e) Code is universal.
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Both the strand of are not copied during transcription because:
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The salient feature of are-
(i) It is made of two poly-nucleotide chains
(ii) Backbone is constituted by sugar and nitrogen base
(iii) Two chains have parallel polarity
(iv) Bases in two strands are paired through H-band
(v) The two chains are coiled in a left-handed fashion.
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Which is incorrect for genetic code?
(i) The codon is triplet.
(ii) codons code for amino acids.
(iii) Genetic code is unambiguous.
(iv) Genetic code is nearly universal.
(v) has a dual function.
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Which of the following statement(s) is/are correct?
(i) tRNA has an anticodon loop that has bases complementary to the codon.
(ii) tRNA has an amino acid acceptor hand.
(iii) tRNA are specific for each amino acid.
(iv) For initiation, there is specific tRNA that is referred to as initiator tRNA.
(v) For termination there is specific tRNA that is referred to as terminator tRNA.
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E. coli cells with a mutated z gene of the lac operon cannot grow in a medium containing only lactose as a source of energy because
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Select the incorrect statement.
