Q. No.Golden rice was created by:
1.
hybridization of institutional rice varieties with wild varieties
2.
mutation breeding using gamma rays
3.
by transforming rice with two beta-carotene biosynthesis genes, one from a eukaryote and another from a prokaryote
4.
by transforming rice with two beta-carotene biosynthesis genes from two different prokaryotes
Exploring molecular, genetic, and species-level diversity for products of economic importance unethically appropriated and without fair compensation to indigenous people is called:
| 1. | Bioprospecting | 2. | Bioremediation |
| 3. | Biopiracy | 4. | Biofortification |
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A hybridization probe used in molecular diagnosis is commonly tagged with a radioactive isotope to allow for its visualization. A common such radioactive isotope that can be used is:
| 1. | 60Co | 2. | 32P |
| 3. | 15N | 4. | 131I |
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Production of transgenic plants is easier than the production of transgenic animals mainly because:
| 1. | Plant cells can grow in cell culture. |
| 2. | Plant cells have a lower number of potentially lethal genes. |
| 3. | Plant cells are totipotent. |
| 4. | Plants do have cancers. |
Plants genetically engineered to make them resistant to glyphosate was an important achievement because:
| 1. | glyphosate promotes frost damage |
| 2. | glyphosate encourages the production of fruit that is lower in protein |
| 3. | glyphosate is the active ingredient in herbicides |
| 4. | glyphosate prevents the transfer of genes into the plants |
I. Spores and crystalline insecticidal proteins produced by B. thuringiensis are now used as insecticides in organic farming.
II. Because of their specificity, these pesticides are regarded as environmentally friendly, with little or no effect on humans, wildlife, pollinators, and most other beneficial insects.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
I. Diseases such as sickle cell disease that are caused by autosomal recessive disorders may be a good candidate for gene therapy treatment.
II. For such disorders, a person's normal phenotype or cell function may be restored in cells that have the disease by a normal copy of the gene that is mutated.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
| Assertion (A): | Transgenic animals can be specifically designed to allow the study of how genes are regulated, and how they affect the normal functions of the body and its development, e.g., study of complex factors involved in growth such as insulin-like growth factor. |
| Reason (R): | By introducing genes from other species that alter the formation of this factor and studying the biological effects that result, information is obtained about the biological role of the factor in the body. |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of the (A) |
| 2. | Both (A) and (R) are True but the (R) is not the correct explanation of the (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Reason: Lymphocytes do not express ADA gene.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false
A fragment of nucleic acid (DNA or RNA) that can be used to identify, usually through autoradiography, specific DNA or RNA molecules bearing the complementary sequence is called:
| 1. | Vector | 2. | Probe |
| 3. | Selectable marker | 4. | Reporter gene |
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