The sex chromosomes of a female bird have:

Match List-I with List-II

List-I (Immunity barriers)	List-II (Examples)
(A) Physical barriers	(I) Interferons
(B) Cellular barriers	(II) Acid in the stomach
(C) Cytokine barriers	(III) Skin
(D) Physiological barriers	(IV) WBCS

 Choose the correct answer from the options given below:

In flowering plants, zygote develops into :

Choose the correct option, which explains the term alleles.

The relation between species richness and area for a wide variety of taxa (angiosperm plants, birds, bats, freshwater fishes) can be represented by the equation :

Which one of the following statements is not true with reference to AIDS infection in human beings?

Arrange the following steps involved in Recombinant DNA Technology in correct sequence.
(A) Insertion of recombinant DNA into host cell/organism
(B) Cutting of source DNA as well as vector DNA at specific location and their joining
(C) Isolation of the genetic material (DNA)
(D) Obtaining the foreign gene product
(E) Culturing transformed host cells at large scale
Choose the correct answer from the options given below :

Two capacitors of capacitances \(8 \mu F\) and \(20 \mu F\) are connected in series with a battery. The voltage across the \(8 \mu F\) capacitor is 5 V . The total battery voltage is:

Rajesh calculated \(95\%\) confidence level. What does he mean by that?
(A) He can be \(95\%\) confident that his sample will include the population parameter.
(B) He can be \(95\%\) confused that his sample will include the population parameter.
(C) He can be \(5\%\) confident that his sample will not include the population parameter.
(D) He can be \(5\%\) confident that his sample will include the population parameter.
Choose the correct answer from the options given below :

Read the given paragraph and answer the given question :
Parasitism has evolved in many taxonomic groups from plants to higher vertebrates. Many parasites have evolved to be host specific in such a way that both host and the parasite tend to co-evolve. In accordance with their life styles, parasite evolve special adaptations and complex life cycle.
Match List - I with List - II.

LIST I	LIST II
(A) Cuckoo and Crow	(I) Ectoparasite
(B) Copepods	(II) Commensal Organism
(C) Plasmodium	(III) Brood Parasitism
(D) Orchids and Mango tree	(IV) Endoparasite

Choose the correct answer from the options given below:

Match List-I with List-II

List-I (Function)	List-II (Property)
(A) \(f(x)=\left\{\begin{array}{ll}\frac{x}{|x|} & : x \neq 0 \\ 0 & : x=0\end{array}\right.\)	(I) continuous but not differentiable at  \(x=0\)
(B) \(f ( x )=| x |\)	(II) continuous but not differentiable at \(x=1\)
(C) \(f(x)=\left|x^2-1\right|\)	(III) discontinuous at \(x=0\)
(D) \(f(x)=|x-1|\)	(IV) continuous but not differentiable at \(x=1,-1\)

Choose the correct answer from the options given below:

The puffed up appearance of dough is due to the production of:

Read the passage carefully and answer the given questions.
Recombinant DNA Technology Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
Which one of the following techniques is used to amplify a specific DNA sequence?