Which of the following plant was first genetically modified to be resistant to herbicides?
a) wheat
b) maize
c) tobacco
d) barley
Explanation: in France and USA in 1986
The first genes available for genetic engineering of crop plants for pest resistance were Cry genes from bacterium………….
a) Bacillus thuringiensis
b) Haemophilus influenze
c) Escherichia coli
d) Bacillus amyloliquefaciens
Explanation: these genes are popularly known as Bt genes
Which of the following transgenic crops with Bt genes have been developed?
a) cotton, rice and maize
b) potato, tomato and brinjal
c) cauliflower and cabbage
d) all of these
Transgenic animals have the potential to improve human welfare in…….
a) agriculture
b) medicine
c) industry
d) all of these
Explanation: larger sheep that grow more wool, cow that produce insulin in milk and goat that produce spider silk for material production
Biotechnology and Healthcare:
The response of the immune system to any antigen, even the simplest
is…….
a) polyclonal
b) monoclonal
c) biclonal
d) non-clonal
Explanation: Polyclonal antibodies (PAbs) are a mixture of antibodies that are secreted by different B cell lineages.
