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A cell biologist determines that diploid cells from a particular species of grasshopper contain 200 picograms of DNA per cell during the G2 stage of interphase. Based on this finding, how many picograms of DNA should be present in a single cell from this species during metaphase I of meiosis? (Enter the number only, not the units.)

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Answer:

The correct answer will be- 200

Explanation:

The cell cycle in eukaryotes mostly takes place in four phases: G₁, S, G₂ and M phase in sequence.

The DNA replication takes place during S phase which doubles the amount of DNA in a cell after which during M- phase the DNA divides into the daughter cell.

The amount of DNA present during G₂ phase is the 200 pg which will remain same until anaphase I as the segregation of chromosomes to the daughter cells takes place in the anaphase. Therefore, the amount of DNA observed after G₂ phase will remain 200 pg till metaphase I.

Thus, 200 is the correct answer.

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