Choose the most appropriate option about the presence of nitrogenous bases; Cytosine, 5-methyl uracil and Uracil.

Select the examples of ex-situ conservation:
(A) Zoological parks
(B) Sanctuaries
(C) Seed banks
(D) Cryopreservation of gametes
Choose the correct answer from the options given below:

Identify the terminal method used to prevent pregnancy is :

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.
Which one of the following techniques is used to separate DNA fragments?

In gel electrophoresis, the separated DNA fragment can be visualized -

Select the correct statement/s about sporopollenin found in pollen grain.
(A) The hard outer layer of pollen grains is made up of sporopollenin.
(B) It is one of the most resistant organic material known.
(C) It does not withstand high temperature and strong acids.
(D) No enzyme can degrades it.
Choose the correct answer from the options given below:

Industrial melanism in peppered moths is an example of:

Which of the following is known as Hinsberg's reagent?

The construction of first rDNA was done using plasmid of :

Which of the following techniques are used for early molecular diagnosis of disease?
(A) Urine analysis
(B) PCR
(C) ELISA
(D) RDT
Choose the correct answer from the options given below:

Match List-I with List-II

List-I	List-II
(A) NBA sin\(\omega\)t	(I) Blv
(B) Joule's loss of heat	(II) Mutual Inductance
(C) Motional emf	(III) \(\frac{B^2l^2v^2}{R}\)
(D) \(\mu_r\) \(\mu_0 n_1 n_2 \pi r^2 l\)	(IV) A.C. Generator

Choose the correct answer from the options given below:

A surface of area \( \vec{A} = 2\hat{i} - 3\hat{k} \) exists in a region of electric field \( \vec{E} = a\hat{i} + b\hat{j} \). The net flux passing through the surface is

The wavelength of emitted wave due to energy transition in hydrogen atom from n = 3 to n = 2 energy level will be