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प्रश्न
Assertion: Colchicine reduces the chromosome number.
Reason: It promotes the movement of sister chromatids to the opposite poles.
विकल्प
Assertion is correct and reason is wrong
Reason is correct and the assertion is wrong
Both assertion and reason is correct
Both assertion and reason is wrong.
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उत्तर
Both assertion and reason is wrong.
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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 ______.
Economically important crop plants with superior quality are raised by ______.
A group of plants produced from a single plant through vegetative or asexual reproduction are called a pureline.
Golden rice is a hybrid.
Assertion: Hybrid is superior than either of its parentsReason: Hybrid vigour is lost upon inbreeding.
Semi-dwarf varieties were introduced in rice. This was made possible by the presence of dwarfing gene in rice. Name this dwarfing gene.
Name three improved characteristics of wheat that helped India to achieve high productivity
Biofortification may help in removing hidden hunger. How?
Higher Order Thinking Skill (HOT)
Polyploids are characterised by gigantism. Justify your answer.
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.
