Somatic hybridization is a technique of
natural breeding
natural pollination
artificial pollination
making a hybrid between two somatic cells
Which of the following is used in genetic engineering?
nuclease
RNA polymerase
DNA polymerase
restriction endonuclease
Two bacteria found to be very useful in genetic engineering experiments are
Rhizobium and Diplococcus
Escherichia and Agrobacterium
Nitrobacter and Azotobacter
Nitrosomonas and Kiebsiella
Lack of independent assortment of genes A and B in fruit fly Drosophila is due to
repulsion
linkage
crossing over
recombination
The 'Cri-du-chat' syndrome in caused by change in chromosome structure involving
deletion
inversion
duplication
translocation
The Ti plasmid is often used for making transgenic plants. This plasmid is found in
Azotobacter
Agrobacterium
yeast as a 2 m plasmid
roots of leguminous plants.
DNA replication takes place at
S-phase
G1-phase
G2-phase
M-phase
Genetic material of virus is
RNA
DNA
carbohydrate
either DNA or RNA
Extranuclear genes occur in
plastids and inherited
plasmid and not inherited
mitochondria and inherited by male
mitochondria and inherited by female
Reverse transcriptase is also known as
RNA dependent RNA polymerase
DNA dependent RNA polymerase
DNA dependent DNA polymerase
RNA dependent DNA polymerase
