Question
List various natural methods of birth control.
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Answer
Periodic abstinence, coitus interruptus and lactational amenorrhea are some natural methods of birth control.
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Golden rice was engineered from normal rice by Potrykus and Beyer in the 1990s. The typical golden colour is due to the production of $\beta$-carotene a precursor of vitamin-A. Golden rice differs from its parental strain by the addition of three $\beta$-carotene genes. These included two genes from daffodil plant and third from a bacterium. The incorporation of these genes allows the rice plant to modify certain metabolic pathways in its cells to produce $\beta$-carotene.
→Golden rice was engineered from normal rice by Potrykus and Beyer in the 1990s. The typical golden colour is due to the production of $\beta$-carotene a precursor of vitamin-A. Golden rice differs from its parental strain by the addition of three $\beta$-carotene genes. These included two genes from daffodil plant and third from a bacterium. The incorporation of these genes allows the rice plant to modify certain metabolic pathways in its cells to produce $\beta$-carotene.
- Due to genetic modification golden rice plants produce and store $\beta$-carotene in:
- Stem.
- Seed.
- Leaves.
- All of these.
- Transfer of genes to produce golden rice is achieved by:
- Agrobacterium.
- pBR322
- $\lambda$-phage.
- gene gun.
- In golden rice two genes were taken from:
- Narcissus sp.
- Erwinia.
- Coryza saliva.
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- Golden rice is helpful to fight against disease caused by the deficiency of:
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- Vitamin C
- Vitamin A
- Vitamin D
- Golden rice was genetically engineered by
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- Potrykus and Beyer.
- Banting and Best.
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