(A) "Milk obtained from ‘Rosie’ is nutritionally more balanced for human babies than natural human milk." This statement is incorrect because while milk from ‘Rosie’, a transgenic cow, is genetically modified to be similar to human milk and may offer some nutritional benefits, claiming it is more balanced than natural human milk for babies is not universally validated.
(B) "Biopiracy refers to the use of bioresources without proper authorization from MNCs." This statement is misleading. Biopiracy involves exploiting bioresources without proper authorization or compensation to the indigenous people and nations owning those resources, not specifically related to MNCs.
(C) "GEAC is the decisive body for safety and validity of GMOs and GM research respectively." This statement is correct. The Genetic Engineering Appraisal Committee (GEAC) in India evaluates the safety and validity of genetically modified organisms and related research.
(D) "Transgenic animals help us to understand the contribution of genes in the development of disease." This statement is correct. Transgenic animals are engineered to study diseases, allowing scientists to understand genetic contributions to disease development and progression.
Therefore, the correct answer is (C) and (D) only.
GEAC (Genetic Engineering Appraisal Committee) is the body responsible for approving GMO (Genetically Modified Organism) research.
Transgenic Animals are animals that have had their genetic material altered by the addition of foreign DNA.
Both GEAC and transgenic animals play vital roles in advancing scientific research. GEAC ensures that GMO research is conducted safely and ethically, while transgenic animals provide valuable insights into gene function and disease mechanisms.
Answer the following questions:
(a) [(i)] Explain how some strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans but do not kill the Bacillus.
[(ii)] How is the above mechanism exploited for the production of Bt cotton plant by biotechnologists?
(b) [(i)] Explain how the amplification of gene of interest is done using PCR.
[(ii)] State two applications of the desired amplified fragment of DNA.
The basic scheme of the essential steps involved in the process of recombinant DNA technology is summarised below in the form of a flow diagram. Study the given flow diagram and answer the questions that follow.
(a) What is the technical term used for Step 4 in the above process?
(b) Which of the given two combinations of restriction enzyme should be used in Step 1? Justify your answer.
(i) EcoR I to cut the plasmid and Hind III to cut the alien DNA.
(ii) EcoR I to cut both the plasmid and alien DNA.