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Question

Pollen grain of the plant whose 2n=28 are cultured to get callus by tissue culture method what would be the number of chromosome in the cells of the callus ?


Solution

Dear student.

The number of chromosomes in the cells of callus will be 14.

Diploid number of chromosomes in a plant = 28

Pollen grains are produced by meiosis, hence their chromosome number will be = 14.

In tissue culture, the callus is produced by mitosis (from haploid pollen here), hence its chromosome number will be equal to 14.
 

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