Consider Two Mammalian Cells, One in G₁ and the Other

question 28

Multiple Choice

Consider two mammalian cells, one in G₁ and the other in G₀ (stationary) phase. If they are stimulated to pass the restriction point by the addition of an extracellular proliferation signal, but the signal is then immediately removed, what would you expect to happen?

• A) Both cells will replicate their DNA.
• B) Only the G₁ cell will replicate its DNA.
• C) Only the G₀ cell will replicate its DNA.
• D) Only the G₁ cell will start to replicate its DNA, but will stop halfway through the replication and will not reach G₂.
• E) Neither of the cells will replicate their DNA.

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