Read the paragraph and answer the question.
Broadly, genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in the single gene. These disorders are transmitted to the offspring on the same lines as we have studied in the principle of inheritance. The trait may also be linked to the sex chromosome as in case of haemophilia. It is evident that this X-linked recessive trait shows transmission from carrier female of male progeny.
What is the probability of having a haemophilic child to a carrier mother and a normal father ?

The detritus food chain (DFC) has at the first tropic level.

Observe the given figure and answer the following questions:

What is essential before undertaking any organ transplant?

Arrange the following events in the order of their occurrence in tobacco plants to prevent infestation of nematode (Meloidogyne incognitia), based on the process of RNA interference.
(A) Specific mRNA of the nematode is silenced
(B) DNA produced sense and anti-sense RNA
(C) Nematode specific genes were introduced into the host plant
(D) dsRNA is formed and RNAi is initiated
Choose the correct answer from the options given below:

Ringworms is not caused by -

Oral contraceptive pills used by the females for birth control are combinations of the following hormones :

Read the following passage carefully and answer the given questions.
Plasmodium, a tiny protozoan is responsible for the disease malaria. 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. Innate immunity consist of four types of barriers. These are – (i) Physical barriers- skin on our body is the main barrier which prevents entry of the micro-organisms. (ii) Physiological barriers- Acid in the stomach, saliva in the mouth, tears from eyes-all prevent microbial growth. (iii) Cellular barriers- Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. (iv) Cytokine barriers- virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Allergy is due to the release of chemicals like histamine and serotonin from the mast cells. 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.
Malignant malaria is caused by _____ is the most serious one and can even be fatal.

The probability distribution of a random variable X is given by

X	0	1	2
P(X)	\(1-7 a^2\)	\(\frac{1}{2} a+\frac{1}{4}\)	\(a^2\)

If \(a>0\), then P\((0< x \leq 2\)) is equal to

Match List-l with List-ll

List-l (Term)	List-II (Explanation)
(A) Natality	(I) Number of the same species individuals that have come into the habitat
(B) Immigration	(II) Number of deaths during a given time in a population
(C) Mortality	(III) Number of the same species individuals that have left the habitat
(D) Emigration	(IV) Number of births during a given time in a population

Choose the correct answer from the options given below:

The number of one - one functions from \(A=\{1,2,3,4\}\) to itself is:

In amines, the nitrogen atom is A and B hybridised, making geometry of amines as C. Then A, B and C respectively are:

The transfer of the ovum from a donor to the fallopian tube of another female is known as:

If \(f: R \rightarrow R\) is defined by \(f(x)=x^2-3 x+2\) then \(f(f(x))\) is :