In E. coli, which of the following classes of plasmids are found?
F-factors
R-factors
Col-factors
all of these
The polygenic genes show
similar genotype
different genotype
different karyotype
different phenotype
Two bacteria found to be very useful in genetic engineering experiments are
Rhizobium and Diplococcus
Escherichia and Agrobacterium
Nitrobacter and Azotobacter
Nitrosomonas and Kiebsiella
Centromere is a part of
gene
ribosomes
mitochondria
chromosome
Plasmid is used as carrier because
it has antibiotic resistance genes
its both ends are replicating points
it can go between eukaryotic and prokaryotic cells
it is a circular DNA which has capacity to bind eukaryotic DNA
The experimental demonstration of the semiconservative mode of DNA replication was given by
Watson and Crick
Bawden and Pirie
Meselson and Stahl
Huberman and Riggs
The chemical knives of DNA are
ligases
polymerases
endonucleases
transcriptases
PCR was developed by
Kary Mullis (1983)
E.Southern (1980)
Francis Collins (1985)
James D.Watson (1953)
'Molecular scissors' used in genetic engineering is
helicase
DNA ligase
DNA polymerase
restriction endonuclease.
Some characters did not assort independently due to
amitosis
linkage
crossing-over
meiosis
