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Question
If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?
- 9
- 18
- 27
- 36
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Solution
(b) 18
Endosperm is triploid (3n) = 27. Hence, n = 9. Definitive nucleus, i.e. the secondary nucleus is diploid, i.e. 2n. Therefore, the number of chromosomes is 18.
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