Multiple Choice QuestionsIn which stage of its life cycle, the silk moth begins to produce silk fibre?
3rd instar larva
4th instar larva
5th instar larva
Pupa
Which one of the following is the American poultry breed
Australop
Assel
Minorica
Rhod Island Red
Transposons are
house-keeping genes
jumping genes
transporting genes
stationary genes
B.
jumping genes
Transposons are sequences of DNA that can move around to different positions within the genome of a single cell, a process called transposition. They are also known as jumping genes and can cause mutations. They were discovered by Barbara McClintock, for which she was awarded a Nobel prize in 1983.
Housekeeping genes are constitutive genes that are required for maintenance of basic cellular function and are expressed in all cells of an organism under normal and patho- physiological conditions.
First genetically modified plant commercially released in India is
golden rice
slow ripening tomato
Bt brinjal
Bt cotton
Biolistic technique is used in
tissue culture process
gene transfer process
hybridization process
germplasm conservation process
Which one of the following bacterium is used for production of transgenic plants
Escherichia coli
Bacillus thuringiensis
Staphylococcus aureus
Agrobacterium tumefaciens
Basic principle of developing transgenic plants and animals is to introduce the gene of interest into the nucleus of
somatic cell
vegetative cell
germ cell
body cell
Which of the following Bt crops is being grown in India by the farmers?
Maize
Cotton
Brinjal
Soyabean
Insect pest resistant Bt cotton plant was developed using
somaclonal variation
micropropagation
somatic hybridisation
Transgenic technology
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