Transformation was discovered by
Meselson and Stahi
Hershey and Chase
Griffith
Griffith
C.
Griffith
The transformation was discovered by F Griffith (1928). He isolated the DNA as genetic material that inherits the genetic information between two generation by using two strain of Pneumococcus bacteria which infect mice. i.e., type III S (smooth) and type IIR (rough) strain
The first human hormone produced by recombinant DNA technology is
insulin
estrogen
thyroxin
thyroxin
Which one of the following shows coiled RNA stands and capsomeres?
Polio virus
Tabacco mosaic virus
Measles virus
Measles virus
Pollen tablets are available in the market for
In vitro fertilisation
breeding programmes
supplementing food
supplementing food
Function of filiform apparatus is to
recognise the suitable pollen at the stigma
stimulate the division of generative cell
produce nectar
produce nectar
An analysis of chromosomal DNA using the Southern hybridization technique does not use
electrophoresis
blotting
autoradiography
autoradiography
Fruit colour in squash is an example of
recessive epistasis
dominant epistasis
complementary genes
complementary genes
Which one of the following a wrongly matched?
Transcription - Writing information from DNA to t-RNA
Translation - Using information in m - RNA to make protein
Repressor protein - Binds to operator to stop enzyme synthesis
Repressor protein - Binds to operator to stop enzyme synthesis
Geitonogamy involves
Fertilisation of a flower by the pollen from another flower of the same plant
Fertilisation of a flower by the pollen from the same flower
Fertilisation of a flower by the pollen from a flower of another plant in the same population
Fertilisation of a flower by the pollen from a flower of another plant in the same population
