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Q.

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

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a

63

b

84

c

21

d

42

answer is A.

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Detailed Solution

Root tip cells is diploid. Hence, 2n= 42. Therefore, n=42/2=21

Aleurone layer is triploid (3n). Therefore, the number of chromosomes in aleurone layer is 3*21=63

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