Which of the following is also known as 'molecular scissors'?

Ex situ conservation include:

Arrange the correct sequence of steps for gel electrophoresis.
(A). Load this DNA into the agarose gel matrix
(B). Cutting the DNA fragments by using a restriction enzyme
(C). Use ethidium bromide for DNA staining
(D). Separated bands of DNA are cut out from agarose gel
Choose the correct answer from the options given below.

Population density at time t + 1 is typically expressed as:
\(N t+1=N t+(\{B+I\}-\{D+E\})\) where \(B+I\),

Scientific term for a situation where a single gene can exhibit multiple
phenotypic expressio is:

Cuckoo layings it's egg in the nest of crow for incubation is an example of-

Which one of the followings is not a common mechanical barrier method for birth control?

Which one of the following regions is not present in transcriptional unit of DNA

\(\int e^x\left(\frac{1-x}{1+x^2}\right)^2\) dx is equal to :

Answer the question on basis of passage given below :
Lyophobic sols like those of metals (Au, Ag, etc) are unstable and are easily precipitated by addition of electrolytes. However, it is observed that the addition of certain lyophilic colloids like gums, soaps, gelatine, etc. to lyophobic colloids (like a metal sol) render lyophobic colloids difficult to coagulate by the addition of electrolytes. The process is known as 'protection' and the lyophilic colloids are termed as Protective colloids. It is believed that the protective action of the lyophilic colloids is due to the covering up of the particles of the lyophobic colloid by those of the lyophilic colloid.
Evidently, smaller the gold number of a protective colloid, the greater is its protective action.
Which of the following does not form a lyophilic colloid?

Magnetic field at large distances on the axis of a current carrying circular loop depends on distance from the centre as

If the interval in which \(f(x)=\frac{x}{4}+\frac{4}{x}, x \neq 0\) is strictly increasing is \((-\infty, a) \cup(b, \infty)\), then

Answer the question on the basis of passage given below:
In the periodic table, the d-block contains the elements of group \(3\) to \(12\). The d-orbitals are progressively filled in each of the four long periods. The elements of d block referred as transition metals have partly filled d orbitals and exhibit certain characteristic properties such as variety of oxidation states, formation of coloured ions, act as catalyst and show paramagnetic behaviour.
The two inner transition metals series \(4f\) and \(5f\) are known as Lanthanoids and Actinoids respectively. The lanthanoids resemble one another more closely as compared to ordinary transition elements in any series.
Highest oxidation state of manganese in fluoride is \(+4\left( MnF _4\right)\) but highest oxidation state in oxides is \(+7\left( Mn _2 O _7\right)\) because: