In organisms, the same structure developed along different directions due to adaptations to different needs. This refers to:

The restriction enzyme EcoRI cuts the DNA between _________ of the sequence 5'-GAATTC-3' present in the DNA.

After the completion of replication, each DNA molecule will have one parental strand and one newly synthesized strand. This scheme is known as:

Which of the following are correct with reference to rDNA technology?
(A) Exo-nuclease removes nucleotides from the ends of DNA
(B) Replication starts at ori
(C) High velocity microparticle of gold, coated with DNA, are used to transfer DNA in a method known as gene gun
(D) Endo-nuclease makes cut at specific positions within DNA
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Which of the following is NOT an example of alien species invasions?

Arrange the given structures involved in packaging of DNA Helix.
(A). Chromatin
(B). Chromatin fibers
(C). Nucleosome
(D). Euchromatin
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crylAb encodes a protein that controls the growth of

Read the passage carefully and answer the following questions
Aldehydes, carboxylic acids and ketones are widespread in the animal and plant kingdoms. They play a pivotal role in various biochemical processes of life. Their presence in nature adds fragrance and flavor. These compounds are widely used in food products, pharmaceuticals, paints, resins and other important product industries. These compounds are prepared by various laboratory methods, which mainly include oxidation, formylation, acylation and reduction. Due to the polar nature of the carbonyl group in aldehydes and ketones, they can exhibit different reactions like nucleophilic addition. They do exhibit redox and various condensation reactions which lead to the formation of various important compounds. On the other hand, the carboxylic acids are mainly prepared by oxidation and hydrolysis of different compounds. The carboxylic acid consists of a carbonyl group and the hydroxy group (attached to the carbonyl carbon atom). This makes it possible for the carboxylic acid to participate in various chemical reactions which involve cleavage of the \(C - OH\) bond and the O-H bond along with the reactions involving the complete - COOH group.
Which of the following compounds will give butanone on oxidation with chromic anhydride (CrO3)?

Arrange the following steps of rDNA technology in correct sequence.
(A) Amplification of gene by PCR
(B) Insertion of rDNA into host cell using vector
(C) Isolation of the genetic material from the cell
(D) Cutting the DNA at specific location
Choose the correct answer from the options given below :

The decreasing order of value of van't Hoff factor for the following in aqueous medium is ___________
(A) \(K _3\left[ Fe ( CN )_6\right]\)
(B) NaCl
(C) \(K _2 SO _4\)
(D) \(C _6 H _{12} O _6\)
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The point on the unit circle with center (0, 0); where tangents are equally inclined to the co-ordinate axes are:

Which of the following statement about cry genes is NOT correct?

Observe the figure and answer the following:

Match List I with List II

LIST I	LIST II
A. Disrupting selection	I. A
B. Stabilising selection	II. D
C. Favouring medium sized individuals	III. C
D. Directional selection	IV. B

Choose the correct answer from the options given below: