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प्रश्न
______ is the chemical used for doubling the chromosomes.
उत्तर
Colchicine is the chemical used for doubling the chromosomes.
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संबंधित प्रश्न
Which method of crop improvement can be practised by a farmer if he is inexperienced?
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 ______.
Golden rice is a hybrid.
In vitro fertilisation means the fertilisation done inside the body.
Assertion: Hybrid is superior than either of its parentsReason: Hybrid vigour is lost upon inbreeding.
Assertion: Colchicine reduces the chromosome number.
Reason: It promotes the movement of sister chromatids to the opposite poles.
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
With a neat labelled diagram explain the techniques involved in gene cloning.
