Identify the correct sequence of structures formed during spermatogenesis.
(A) Spermatozoa
(B) Secondary spermatocytes
(C) Spermatogonia
(D) Spermatids
Choose the correct answer from the options given below:

Identify the statements which are not true for the genetic code.
(A) 64 codons code for amino acids.
(B) The genetic code is nearly universal with some exceptions found in mitochondrial codons and some protozoans.
(C) Some amino acids are coded by more than one codon.
(D) AUC codes for methionine
Choose the correct answer from the options given below:

Read the passage carefully and answer the given questions.
DNA Fingerprinting Polymorphism in DNA sequence is the basis of genetic mapping of the human genome as well as of DNA fingerprinting. DNA fingerprinting involves identification of differences in some specific regions in the DNA sequence called repetitive DNA. It works on the principle of polymorphisms in DNA sequences. The repetitive DNA are separated from bulk genomic DNA. The bulk DNA forms a major peak and the other small peaks are referred to as satellite DNA. These repetitive/satellite DNA sequences show a high degree of polymorphisms and form the basis of DNA fingerprinting.
DNA fingerprinting is meant for:

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

Oral contraceptive pills used by females, function through:

Identify the incorrect statement about genetically modified plants.

Arrange the following steps of gel electrophoresis in correct order.
A. DNA fragments were forced to move towards anode under electric field through agarose gel
B. Staining DNA fragments with Ethidium Bromide.
C. DNA fragments separated according to their size.
D. Visualising them in UV rays
Choose the correct answer from the options given below:

Benzene ring in phenol is expected to give the characteristic substitution or replacement reactions i.e. halogenation, nitration, sulphonation, alkylation etc. In these reactions, the attacking reagent is electrophile. The phenolic group activates the ortho and para positions in the ring due to conjugation. Disubstitution reactions are quite fast as the electron density in the ring has increased considerably. Phenols do not respond to nucleophilic substitution reactions as it is influenced by phenolic group.
Secondary alcohol among the following is:

(A)

(B) \(H _2 C = CH _2- CH _2 OH\)

(C) \(H _3 C - CH _2- CH _2 OH\)
(D)
(E)

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Let \(X\) denote the number of hours a student studies on a selected day. The probability distribution of \(X\) is given by (where \(k\) is some unknown constant)
\(P\left(X=x_i\right)=\left\{\begin{array}{ll}0.5, & \text { if } x_i=0 \\k x_i, & \text { if } x_i=1 \\k\left(4-x_i\right), & \text { if } x_i=2 \text { or } 3 \\0, & \text { otherwise }\end{array}\right.\)
Then the value of \(k\) is

Choose the correct relation between drift velocity (\( v_d \)) and current density (\( J \)) from the following:

The value of the integral \(I=\int_0^1 \frac{1}{\sqrt{1+3 \sqrt{x}}} d x\) is:

Benzene and naphthalene form an ideal solution at room temperature.
The true statements for this solution are :
A. \(\Delta\text{G}\) is positive.
B. \(\Delta\text{S}_{\text{system}}\) is positive.
C. \(\Delta\text{S}_{\text{surroundings}} = 0\).
D. \(\Delta\text{H}_{\text{mix}} = 0\).
E. \(\Delta\text{V}_{\text{mix}} = 0\).
Choose the correct answer from the options given below :

Use of bio-resources without proper authorization from the concerned countries is termed as: