The one aspect which is not a salient feature of genetic code, is its being
degenerate
ambiguous
universal
specific
In lac operon system, Lac gene-i codes for
inducer
repressor
promoter
β- galactosidase
tRNA is attached to mRNA by its
1 loop
II loop
III loop
IV loop
Point mutation involves
insertion
change in single base pair
duplication
deletion
Signaling between cells usually results in the activation of protein
lipases
kinases
proteases
nucleases
The promoter region in a lac operon is distinguishable into the following number of segments
Three
four
two
five
During translation initation in prokaryotes, a GTP molecule is needed in
association of 30S,mRNA with formy1-met-tRNA
associaton of 50S subunit of ribosome with initiation complex
formation of formy1-met-tRNA
binding of 30 subunits of ribosome with mRNA
When a mutation is limited to the substitution of one nucleotide for another it is called
translocation
point mutation
base inversion
sugar phosphate deletion
Mutation is more common when it is present in
recessive condition
dominant condition
constant in population
None of the above
A codon is made up of
single nucleotide
two nucleotides
three nucletides
four nucleotides
