2. It is a molecular cytogenetic
technique that uses fluorescent
probes that bind to only those parts
of the chromosome with a high
degree of sequence complementary.
Steps of fish
• Dna unmasking
• Probe and target denaturation
• Probe target hybridisation
• Detection
• Image analysis on fluorescent
microscope
3. With the help of genetic engineering strain of bacteria and cynobacteria
have been developed which can synthesis ammonia at large scale that can be
used to manufacture fertilizer at much cheaper cost.
Recombinant DNA tech. can also be used to monitor to degredation of
garbage, petroleum products , nephthalene, and other industrial waste .
Bacterium pseudomonoas fluorescence genetically altered by transfer of
light producing enzyme called luciferase found in bacterium vibrio fischeri.
Pseudomonoas fluorescence could cause death of specific worm like
cutworm.
5. Bt cotton is a genetically
modified organism or
genetically modified pest
resistant plant cotton variety,
which produces an insecticide
to bollworm
Bt cotton is made ten year ago,
man’s onto scientists inserted a
toxic gene from the bacterium
called bacillus thuringiensis
into cotton plants to create a
caterpillar resistant variety. The
gene is dna that carries the
instructions for producing toxic
protein.
6. DOLLY SHEEP
SHEEP A: donate body cell nucleus
SHEEP B: donate an egg cell without nucleus
SHEEP C: surrogate mother
7. CLONING DOLLY
1997- A sheep cloned from an adult
cell
Nucleus from body cell was inserted
into an empty egg
Embryo implanted into surrogate
mother
Sheep is genetic replica of animal
from which body cell was taken.