Answer to Question #44759 in Biology for Souvik

Question #44759
Total number of meiotic division required for forming 100 zygotes/100 grains of wheat is-
A)100 B)75 C)125 D)50.
Please explain.
Expert's answer
For flowering plants including wheat it is necessary to have a pollen and an egg cell to produce a single grain. One meiotic division produces 4 pollen cells or single egg cell (three cells formed after every meiotic division degenerates leaving only one functional cell), so the formula to calculate number of meiotic divisions is:

n+ n/4

Thus, total 125 meiotic divisions are required to produce 100 wheat grains (100 divisions to produce 100 egg cells and 25 divisions to produce 100 pollen cells).

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Assignment Expert
08.08.14, 16:55

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08.08.14, 13:35

Thank you sir.

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