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WorksheetsMOLECULAR BASIS OF INHERITANCE - Quiz 13
Total questions: 20
Worksheet time: 7mins
DNA replication in eukaryotes differs from replication in bacteria because
synthesis of the new DNA strand is from 3’ to 5’ in eukaryotes and from 5’ to 3’ in bacteria
synthesis of the new DNA strand is from 5’ to 3’ in eukaryotes and from 3’ to 5’ in bacteria
there are many replication forks in each eukaryotic chromosome and only one in bacterial DNA
synthesis of the new DNA strand is from 5’ to 3’ in eukaryotes and is random in prokaryotes
The chemical nature of a gene is
protein
acid
base
none of these
Which of the following molecules functions to transfer information from one generation to the next?
DNA
mRNA
tRNA
Proteins
Mutations are
Heritable changes in the sequence of DNA bases that produce an observable phenotype
Heritable changes in the sequence of DNA bases
Mistakes in the incorporation of amino acids into proteins
Heritable changes in the mRNA of an organism
What are those structures that appear as ‘beads-on-string’ in the chromosomes when viewed under electron microscope?
Base pairs
Genes
Nucleotides
Nucleosomes
The unequivocal proof of DNA as the genetic material came from the studies on a
Viroid
Bacterial virus
Bacterium
Fungus
Which of the following is not the characteristic feature of genetic code
Triplet nature
Mostly universal
Ambiguous
Degeneracy
More than one initiation codon and termination codons are found in which RNA
prokaryotic m-RNA
Eukaryotic m-RNA
Hetero nuclear RNA
Ribosomal RNA
Taylor conducted the experiment to prove semiconservative mode of chromosome replication on :
Drosophila melanogaster
E. coli
Vinca rosea
Vicia faba
DNA-dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the :-
Alpha strand
Antistrand
Template strand
Coding strand
Termination of polypeptide chain is brought about by
UUG, UAG and UCG
UCG, GCG and ACC
UAA, UAG and UGA
UUG, UGC and UCA
DNA duplex shows
left handed and parallel coiling
left handed and antiparallel coiling
right handed and parallel coiling
right handed and antiparallel coiling.
Experimental evidence supporting concept of triplet genetic code was first provided by
Watson
Crick
Michaelis and Menten
Beadle and Tatum
Genetic code translates the language of
RNA into that of protein
RNA into that of DNA
Amino acids into that of RNA
Protein into that of DNA
Isotopes used in proving semiconservative replication of DNA were
14N 14C
14N 15N
14N 31P
14C 31P
Reverse transcription was discovered by
Beadle and Tatum
Watson and Crick
Khorana
Temin and Baltimore
The flow of information from DNA to mRNA and then to proteins is called
transcription
Translation
Genetic code
Central dogma
Which is required for protein synthesis?
Initiation codon
GTP
Peptidyl transferase
All of these
Synthesis of DNA from RNA template occurs in
reovirus
Rous sarcoma virus
T2
TMV
The terms cistron, recon and muton were proposed by
Benzer
Morgan
Lederberg
Johansen
