In some species of Asteraceae and grasses, seeds are produced without fertilisation. This phenomenon is knows as:

The steps of PCR (Polymerase Chain Reaction) are given below. Arrange them in a correct sequence.
A. Extension of primers
B. Denaturation of DNA fragments by heating
C. Amplified DNA fragments
D. Annealing of primers
Choose the correct answer from the options given below:

Match List-l with List-ll

List-l (Term)	List-II (Feature)
(A) Multiple alleles	(I) Variation in DNA
(B) Mendelian disorder	(II) Non segregation of chromatids during cell division
(C) Chromosomal disorder	(III) Pedigree analysis
(D) Mutation	(IV) Population study

Choose the correct answer from the options given below:

Match List - I with List - II.

List - I	List - II
(A) Aspergillus niger	(I) Butyric acid
(B) Clostridium butylicum	(II) Acetic acid
(C) Saccharomyces cerevisiae	(III) Citric acid
(D) Acetobacter aceti	(IV) Ethanol

Choose the correct answer from the options given below:

The function of the tapetum is:

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 options is correct for working of restriction enzymes?

An insect ingests the inactive toxin, it is converted into an active form of toxin due to

It water is mixed with milk to gain \(20\%\) by selling the mixture at cost price. Then ratio of water to milk in mixture, is :

eV (electron volt) is the unit of

From the following, choose the element for impurity atoms with which pure silicon should be doped to make it a p-type semiconductor:

The untranslated regions are present on an mRNA at:

Arrange the following compounds in increasing order of their acidic strength ?

Value of \(\int \frac{2}{(x-3) \sqrt{x+1}} d x\) is : (Here \(C\) is an arbitrary constant)