The condition where one species is harmed whereas the other is
unaffected is called

Read the following paragraph and answer the given questions.
Repeated amplification is achieved by the use of a thermostable DNA polymerase (isolated from a bacterium, Thermusaquaticus}), which remain active during the high temperature induced denaturation of double stranded DNA. The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation. The separated bands of DNA are cut out from the agarose gel and extracted from the gel piece. The convention for naming these enzymes is the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated, e.g., EcoRI comes from Escherichiacoli} RY 13. In EcoRI, the letter 'R' is derived from the name of strain. Roman numbers following the names indicate the order in which the enzymes were isolated from that strain of bacteria. Stanley Cohen and Herbert Boyer accomplished this in 1972 by isolating the antibiotic resistance gene by cutting out a piece of DNA from a plasmid which was responsible for conferring antibiotic resistance. Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA, RNA, protein, polysaccharides etc. The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.

The convention for naming restriction enzymes 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.
The extraction of separated bands of DNA from the gel piece is called:

A mature embryo sac of an angiosperm is:

Which of the following bond in DNA strand is broken by the action of restriction enzyme?

Which of the following is a bacterial disease?

Chronologically arrange the names of scientists who contributed to the study of genetics.
(A) Alfred Sturtevent
(B) Gregor Mendel
(C) Thomas Hunt Morgan
(D) Sutton and Boveri
Choose the correct answer from the options given below:

if a function \(f: Q \rightarrow R\) defined by \(f(x)=\frac{2 x-1}{2}\) and \(g: Q \rightarrow R\) is defined by \(g(x)=x+2\), then \((g \circ f)\left(\frac{3}{2}\right)\) is :

The oxoacid of sulphur which has a lone pair of electron on sulphur atom is:

Maximum number of male gametes produced from one pollen mother cell (microspore mother cell) will be:

Reaction of \(C _6 H _5 CH _2 Br\) with aqueous sodium hydroxide follows preferably:

A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to \( \left(\frac{3}{4}\right) \)th of the angle of prism. The angle of deviation is :

Choose the correct statements from the following related to glycine amino acid.
(A). Water soluble \(\alpha\)-amino acid.
(B). It has both amino and carboxylic groups in its structure.
(C). It is optically inactive.
(D). It is a non-essential amino acid.
Choose the correct answer from the options given below :