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प्रश्न
Higher Order Thinking Skill (HOT)
‘P’ is a gene required for the synthesis of vitamin A. It is integrated with genome of ‘Q’ to produce genetically modified plant ‘R’.
- What is P, Q and R?
- State the importance of ‘R’ in India.
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उत्तर
-
The P, Q and R:
- P – Beta – carotene gene.
- Q – Prevent vitamin A deficiency.
- R – Golden rice.
-
Importance of rice in India:
- Rice is the most important staple food for millions of people in developing countries like India.
- Beta – carotene is produced in the endosperm of the grain. It could control the chronic health problems caused by vitamin A deficiency, especially among the poor in developing countries like India.
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संबंधित प्रश्न
In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes respectively are ______.
______ is the chemical used for doubling the chromosomes.
Rice normally grows well in alluvial soil, but ______ is a rice variety produced by mutation breeding that grows well in saline soil.
The process of producing an organism with more than two sets of chromosome is called mutation.
Golden rice is a hybrid.
Assertion: Colchicine reduces the chromosome number.
Reason: It promotes the movement of sister chromatids to the opposite poles.
Describe mutation breeding with an example.
Biofortification may help in removing hidden hunger. How?
With a neat labelled diagram explain the techniques involved in gene cloning.
Higher Order Thinking Skill (HOT)
Polyploids are characterised by gigantism. Justify your answer.
