CHAPTER 33: Biotechnology and its Applications

The introduction of TDNA into plants involves

Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of

What is it that forms the basis of DNA fingerprinting?

The geneticallymodified (GM) brinjal in India has been developed for

Read the following four statements (A-D) about certain mistakes in two of them.

(A)The first transgenic buffalo, Rosie produced milk which was human alphalactalbumin enriched.

(B)Restriction enzymes are used in isolation of DNA from other macromolecules.

(C)Downstream processing is one of the steps of rDNA technology.

(D)Disarmed pathogen vectors are also used in transfer of rDNA into the host. Which of the two statements have mistakes?

Which variety of rice was patented by a U.S. company even though the highest number of varieties of this rice is found in India ?

Select the correct statement(s)-

(1)IARI has released a mustard variety rich in vitamin C.

(2)Pusa Sawani variety of Okra is resistant to aphids.

(3)Hairiness of leaves provides resistance to insect pests.

(4)Agriculture accounts for approximately 33% of India’s GDP and employs nearly 62% of the population.

The scientific process by which crop plants are enriched with certain desirable nutrients is called

Which kind of therapy was given in 1990 to a four year old girl with adenosine deaminase (ADA) deficiency?

The two polypeptides of human insulin are linked together by

Which of the following is correct sequence for gene therapy ?

I.Inject engineered cells into patients bone marrow.

II.Viral DNA carrying the normal allele inserts into chromosome.

III.Let retrovirus infect bone marrow cells that have removed from patient and cultured.

IV.Insert RNA version of normal allele into retrovirus.

Enzymes can be immobilised by

Read the following statements and choose the correct option.

(i)Gene therapy has been tested on large number of patients with a wider variety of inherited genetic disorders, and in numerous cases it has produced a complete cure.

(ii)Genetic engineering has been used to mass produce insulin for curing the diabetes.

(iii)DNA hybridization is the base pairing of DNA from two different sources.

(iv)Genetic engineering is a technique of plant breeding.

C-peptide of human insulin is

Transgenic plants are the ones