If a recombinant $DNA$ molecule carrying an ampicillin resistance gene is introduced into an $E. coli$ cell and the host cells are spread on an agar plate containing ampicillin,then...
- ABoth transformed and untransformed cells will die.
- BBoth transformed and untransformed recipient cells will grow.
- CTransformed recipient cells will grow and untransformed recipient cells will die.
- DTransformed recipient cells will die and untransformed recipient cells will grow.
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Elution means
r-$DNA$ is inserted within the coding sequence of an enzyme,$\beta$-galactosidase. This results in the inactivation of the gene for the synthesis of this enzyme,which is referred to as . . . . . . .
Illustrate the design of a bioreactor. Highlight the difference between a flask in your laboratory and a bioreactor which allows cells to grow in a continuous culture system.
Medium
View SolutionRefer to the following statements for agarose-gel electrophoresis:
$(a)$ The $\text{DNA}$ fragments resolve according to their size.
$(b)$ The separated $\text{DNA}$ fragment can be visualised only after staining with ethidium bromide followed by exposure to $UV$ radiation.
$(c)$ $\text{DNA}$ is always loaded into the well.
$(d)$ The smallest fragment of $\text{DNA}$ is near the well.
Choose the correct statements:
$(a)$ The $\text{DNA}$ fragments resolve according to their size.
$(b)$ The separated $\text{DNA}$ fragment can be visualised only after staining with ethidium bromide followed by exposure to $UV$ radiation.
$(c)$ $\text{DNA}$ is always loaded into the well.
$(d)$ The smallest fragment of $\text{DNA}$ is near the well.
Choose the correct statements:
Difficult
View SolutionIn gel electrophoresis,the separated bands of $DNA$ are cut out and extracted from the gel piece. This step is called
Medium
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