What is antisense technology?
A cell displaying a foreign antigen used for synthesis of antigens
Production of somaclonal variants in tissue cultures
When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
RNA polymerase producing DNA
In E.coli, which of the following classes of plasmids are found?
F-Factors
R-Factors
Col-Factors
all of these
Mutation is more common when it is present in
recessive condition
dominant condition
constant in population
None of the above
Protein synthesis in an animal cell occurs
only on the ribosomes present in cytosol
on ribosomes present in cytoplasm as well as in mitochondria
only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
on ribosomes present in the nucleolus as well as in cytoplasm
The one aspect which is not a salient feature of genetic code, is its being
degenerate
ambiguous
universal
specific
tRNA is attached to mRNA by its
1 loop
II loop
III loop
IV loop
RNA polymerase stops its activity by
rho(ρ)factor
sigma (σ) factor
UAG
AUG
A codon is made up of
single nucleotide
two nucleotides
three nucletides
four nucleotides
Mutations are generally
recessive
polymorphic
lethal
dominant
How many genes are present in E.coli?
200
320
231
None of these