Which organism was used by T.H. Morgan for his experiments ?

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
In EcoR I the latter 'R' is derived from the -

Which of the following in NOT a sacred grove?

A specific recognition sequence identified by endonuclease to make cuts at specific positions within the DNA is -

Match List-l with List-II:

List-I (Transgene)	List-II (Used for/Products)
(A) α-1-antitrypsin	(I) Meloidogyne incognitia
(B) crylAc	(II) Corn borer
(C) Antisense RNA	(III) Treat emphysema
(D) crylAb	(IV) Cotton bollworms

Choose the correct answer from the options given below:

Which one of the following hormones is essential for maintenance of endometrium?

Match List I with List - II.

List - I	List - II
(A) Mature mRNA	(I) Adenylation
(B) Heterogeneous nuclear RNA	(II) Exons
(C) Tailing	(III) Methyl guanosine triphosphate
(D) Capping	(IV) RNA polymerase II

Choose the correct answer from the options given below :

Choose the correct statement about molar conductivity, \(\Lambda_{m}\)

A heating element is marked \( V = 210 \text{ V, } P = 630 \text{ W} \). The resistance of the element (R) would be

The probability that a plant \(A\) survives is \(\frac{3}{4}\) and the probability that another plant \(B\) survives is \(\frac{1}{3}\).
The probability that only one of them survives is :

The area (in sq.units) of the region enclosed by the curve \(y = cos\) \(x\), \(-\frac{\pi}{2} \leq x \leq \frac{\pi}{2}\) and the \(x\) - axis is:

The process of transformation of spermatids into spermatozoa is known as

Read the passage carefully and answer the questions
Amines are considered as derivatives of ammonia obtained by replacement of hydrogen atoms with alkyl or aryl groups. In nature they occur among proteins, vitamins, alkaloids and hormones. These can be primary, secondary or tertiary depending on the number of hydrogen groups replaced. They can be prepared from nitro compounds, alkyl halides, nitriles, amides etc. Due to unshared pair of electrons they behave as Lewis bases. Influence of the number of hydrogen atoms at nitrogen atom is displayed in physical properties such as solubility, boiling point and chemical reactions including basicity. Basic character of amines is expressed in terms of their \(K_b\) and \(p K_b\) values. Three classes of amines can be distinguished with p-toluene sulphonyl chloride which reacts with primary and secondary ddu amines. Amino group when attached to benzene ring behaves as an activating and ortho para directing group.
Which amine will have highest \(p K _{ b }\) value?