Question 3 :
Transgenic animals are produced for which of the following purposes?<br>I. To study-how gene are regulated and how they affect the normal functions of body and its development<br>II. To study of diseases<br>III. To obtain useful biological product <br>IV. To test vaccine safety and chemical safety

Question 4 :
The tumour-inducing capacity of Agrobacterium tumifaciens is located in large extrachromosomal plasmids called

Question 5 :
Bt corn has been made resistant from corn borer disease by introduction of the gene

Question 8 :
<p>Alec Jeffreys developed the DNA fingerprinting technique. The probe he used was</p>

Question 11 :
Which of the following is the source of complementary strand in mRNA silencing.

Question 13 :
<p>Part of the plant, which is cultured to obtain virus free clones, is </p>

Question 15 :
Bt toxin genes are isolated from Bacillus thuringiensis and incorporated into crop plants making them insecticidal. The choice of genes depend upon -

Question 16 :
<p>In order to obtain virus-free plants through tissue culture, the best method is</p>

Question 18 :
Two microbes found to be very useful in genetic engineering are

Question 19 :
Read the statements (a-e) and answer the Question which follows them:<br>(a) Phenylketonuria and cystic fibrosis can be treated by the help of transgenic animals.<br>(b) Presently, vaccine safety testing is done on monkeys.<br>(c) During chemical safety testing, effect toxins can be obtained in less time by use of transgenic animals. <br>(d) In India itself, more than 2,00,000 varieties of rice exist.<br>(e) Introduction of genetically modified organisms into ecosystems have predictable results.<br>How many of the above statements are true?

Question 23 :
<p>Golden rice is a promising transgenic crop. When released for cultivation, it will help in</p>

Question 24 :
<p>I. …A… is the ability of a cell to take up foreign DNA</p><p>II. The cell is treated with specific concentration of a divalent cation such as …B… to increase pore size in cell wall</p><p>III. In ….C… method recombinant DNA is directly injected into the nucleus of an animal cell</p><p>The most appropriate option regarding A, B and C is</p>

Question 25 :
It is sometimes necessary to genetically engineered mammalian cells to produce proteins because they