Which one of the following step is not involved in the genetic modification of an organism?

The typical angiosperm embryo sac at maturity has:

Read the following paragraph and answer the given questions.
Cancer detection is based on biopsy and histopathological studies. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Do you know why mother's milk is considered very essential for the new-born infant? The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused. Morphine is a very effective sedative and painkiller, and is very useful in patients who have undergone surgery.
The drug, which is very effective sedative and painkiller and useful for patients who have undergone surgery is -

Arrange the following steps of Polymerase Chain Reaction in correct sequence
A. Denaturation of ds DNA
B. Extension of Primers
C. Amplification of desired DNA
D. Primer Annealing
Choose the correct answer from the options given below:

Which one of the following is the cause of extinction of Stellar's Sea Cow and Passenger Pigeon?

Arrange the following steps of genetically engineered insulin production.
(A) Isolation and purification of the insulin gene from beta cells of the
pancreatic islets
(B) Expression of gene in host cell
(C) Joining the two polypeptides by disulfide bonds
(D) Cloning of insulin gene in Escherichia coli cloning host cell
Choose the correct answer from the options given below:

The females of which of the following mammals exhibit an oestrus cycle?

If the sum and difference of squares of mean and variance of a Binomial distribution is \(\frac{225}{256}\) and \(\frac{63}{256}\) respectively, the \(P(X \geq 2)\) is :

Ortho and Para nitrophenols can be separated by steam distillation. This is because

Identify the factor which does not affect the Hardy-Weinberg equilibrium ?

Let the matrix \(A=\left[a_{i j}\right]_{3 \times 3}\) be defined by
\(a_{i j}=\left\{\begin{array}{ll}2 i+3 j, & i<j \\5, & i=j \\3 i-2 j, & i>j\end{array}\right.\)
The number of elements in the matrix \(A\) which are greater than 7 , is:

Two resistances, \( 6 \, \Omega \) and \( 3 \, \Omega \), are connected in parallel to an electrical cell of EMF 6 V and \( 1 \, \Omega \) internal resistance. The reading of the voltmeter connected to the circuit will be:

The area (in sq.units) of region bounded by \(y^2=9 x, x=2, x=4\) and the \(x\)-axis in the first quadrant is