During allergic reactions, which of the followings are secreted?
(A) Histamines
(B) Interferons
(C) Serotonin
(D) Pyrogens
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Read the paragraph given below and answer the question.
Sutton and Boveri argued that the pairing and separation of a pair of chromosomes would lead to the segregation of a pair of factors they carried. Sutton united the knowledge of chromosomal segregation with Mendelian principles and called it the chromosomal theory of inheritance. Following this synthesis of ideas, experimental verification of the chromosomal theory of inheritance by Thomas Hunt Morgan and his colleagues, led to discovering the basis for the variation that sexual reproduction produced. Morgan worked with the tiny fruit files, which were found very suitable for such studies. They could be grown on simple synthetic medium in the laboratory. They complete their life cycle in a short span of time and a single mating could produce a large number of progeny flies. Also, there was a clear differentiation of the sexes - the male and female flies are easily distinguishable. Also, it has many types of hereditary variations that can be seen with low power microscopes.
Drosophila melanogaster complete their life cycle in

The parturition is induced by a complex neuroendocrine mechanism. Which of the following hormone is not involved in this process?

Match List I with List II

List I	List ll
(A) alpha-1-antitrypsin	(I) Resistant to insect attacks
(B) Transgenic mice	(II) Genetically engineered insulin
(C) Eli Lily	(III) Testing safety of polio vaccine
(D) Bt crops	(IV) Treating Emphysema

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According to Gause's Competitive Exclusion Principle:

Arrange the following steps of 'Polymerase Chain Reaction' in a correct sequence.
(A) Annealing of primers
(B) Amplified DNA
(C) Denaturation of DNA
(D) Extension of primers
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Match List - I with List - II.

LIST I (Molecule)	LIST II (Function)
A. DNA ligase	I. snRNAs
B. RNA polymerase II	II. Discontinuous RNA synthesis
C. RNA polymerase III	III. 28S rRNA
D. RNA polymerase I	IV. hn RNA

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Consider the lines \(l_1: \frac{x-1}{0}=\frac{y-1}{1}=\frac{2-z}{1}\) and \(l_2: \frac{x}{2}=\frac{y}{0}=\frac{2 z-1}{4}\), then which of the following are correct?
(A) Direction Ratios of \(l_1=\langle 0,1,1\rangle\)
(B) Direction Ratios of \(l_2=\langle 2,0,2\rangle\)
(C) Angle between \(l_1\) and \(l_2=\frac{\pi}{3}\)
(D) Angle between \(l_1\) and \(l_2=\frac{2 \pi}{3}\)
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The probability that A hits a target is \(\frac{1}{5}\) and the probability that B hits it is \(\frac{2}{3}\) The probability that the target will be hit if both A and B shoot at it independently is:

Identify the regions of the transcription unit.
(A) Promoter
(B) Sigma factor
(C) Terminator
(D) The structural gene
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Why does colour of \(KMnO_4\) disappear when oxalic acid is added to its solution in acidic medium?

Identify the biodegradable polymer in the following :

When we consider a balanced chemical equation of an elementary reaction which statement is applicable on it?
(A) Molecularity can never be zero
(B) Order is less than molecularity
(C) Order is equal to molecularity
(D) Order is greater than the molecularity
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