Select the statements which hold true for transgenic plants.
A. They are produced by arresting spindle formation during cell division.
B. They are formed by inducing gene mutation.
C. They are produced by introducing foreign gene through rDNA technology.
D. Bt cotton is a transgenic plant.
Choose the correct answer from the options given below:

The degradation of humus by microbes to release inorganic nutrients is known as-

If the sequence of one strand of DNA is written as: 5'-ATCGTGCTATGAGCATGC-3'.
The sequence of its complementary strands will be?

The technique of using live organisms or derived enzymes to produce products and processes useful to humans is known as:

Match List I with List - II. -

List – l (Terms)	List – II (Linked to)
(A) Divergent evolution	(l) Branching descent
(B) Convergent evolution	(II) Geographical habitats
(C) Adaptive radiation	(III) Analogous structures
(D) Natural selection	(IV) Homologous structures

Choose the correct answer from the options given below:

Match List - I with List - II.

LIST I	LIST II
(A) Ribosome	(I) Replication
(B) Histone	(II) Transcription
(C) DNA polymerase	(III) Translation
(D) RNA polymerase	(IV) Nucleosome

Choose the correct answer from the options given below :

Read the following paragraph and answer the given questions:
In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition site in the vector will generate several fragments, which will complicate the gene cloning. In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes. The recombinant plasmids will lose tetracycline resistance due to insertion of foreign DNA but can still be selected out from non-recombinant ones by plating the transformants on tetracycline containing medium.
The recombinants will grow in ampicillin containing medium but not on that containing tetracycline. But, non- recombinants will grow on the medium containing both the antibiotics. In this case, one antibiotic resistance gene helps in selecting the transformants, whereas the other antibiotic resistance gene gets 'inactivated due to insertion' of alien DNA, and helps in selection of recombinants. Origin of replication (ori) is a sequence from where replication starts and any piece of DNA when linked to this sequence can be made to replicate within the host cells. This sequence is also responsible for controlling the copy number of the linked DNA. So, if one wants to recover many copies of the target DNA it should be cloned in a vector whose origin support has high copy number.
Multiple recognition sites in vector generate several fragments, which will complicate the-

Which of the following reagents are used for denaturation of alcohol?

Read the following passage carefully and answer the given questions
The separated DNA fragments can be visualized only after staining the DNA with ethidium bromide followed by exposure to UV radiation. Bright orange colored bands of DNA in ethidium bromide stained gel exposed to UV light can be seen. The separated bands of DNA are cut out from the agarose gel and extracted from the gel piece. This step is known as elution. The DNA fragments purified in this way are used in constructing recombinant DNA by joining them with a cloning vector.
The DNA fragments are separated by-

The product, when an alcoholic solution of sucrose is boiled with dilute hydrochloric acid or sulphuric acid is/are

On the basis of the information available from the reaction:
\(\frac{4}{3}Al+O_2\rightarrow \frac{2}{3}Al_2O_3, \Delta G = -827 kJ/mol\)
The minimum e.m.f required to carry the electrolysis of \(Al_2O_3\) is (\(F = 96500 C\ mol^{-1}\)):

Which one of the following is the weakest oxidizing agent?

Friedel-Craft reaction as shown below is an example of