In Recombinant DNA technology antibiotics are used

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9.Biotechnology Principals and Process

easy

In Recombinant $DNA$ technology antibiotics are used

As selectable markers

To keep medium bacteria-free

To detect alien DNA

To impart disease-resistance to the host plant

(NEET-2020)

Solution

The correct answer is option (2) because antibiotics are used in RDT to keep medium or culture bacteria-free.

Selectable marker helps in identifying and eliminating non-transformants and selectively permitting the growth of the transformants. They undergo insertional inactivation upon addition of alien DNA in their ORF.

Standard 12

Biology

In gel electrophoresis, the separated bands of $DNA$ are cut out and extracted from the gel piece. This step is called

medium

Match the following enzymes with their functions

$(a)$ Restriction endonuclease $(i)$ Joins the $DNA$ fragements

$(b)$ Restriction exonuclease $(ii)$ Extends primers on genomic $DNA$ template

$(c)$ $DNA$ ligase $(iii)$ Cuts $DNA$ at specific position

$(d)$ Taq polymerase $(iv)$ Removes nucleotides from the ends of $DNA$

Select the correct option from the following

medium

(NEET-2019)

Separation of DNA, fragments is done by a technique known as :

easy

(NEET-2022)

Restriction enzymes may be used for:

medium

Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops.

Reason : A gene incorporated in the bacterial chromosomal genome-gets automatically transferred to the crop with which the bacterium is associated.

medium

(AIIMS-2005)

$(a)$ Restriction endonuclease	$(i)$ Joins the $DNA$ fragements
$(b)$ Restriction exonuclease	$(ii)$ Extends primers on genomic $DNA$ template
$(c)$ $DNA$ ligase	$(iii)$ Cuts $DNA$ at specific position
$(d)$ Taq polymerase	$(iv)$ Removes nucleotides from the ends of $DNA$

In Recombinant $DNA$ technology antibiotics are used

Solution

Similar Questions

In gel electrophoresis, the separated bands of $DNA$ are cut out and extracted from the gel piece. This step is called

Separation of DNA, fragments is done by a technique known as :

Restriction enzymes may be used for:

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