Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus. The measured DNA levels ranged from 3 to 6 picograms per nucleus. In which stage of the cell cycle was the nucleus with 6 picograms of DNA?
G1
G0
S
G2
2007-02-24 08:24:26 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Think about it a while. When does a cell replicate its DNA? Given that, in which stage is the replication of DNA already finished? WOuldn't a cell in that stage have twice as much DNA as a cell that just finished mitosis? If none of this makes sense to you, you need to read your book again.
2007-02-24 08:34:48 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
G2 phase. S phase is where DNA replication takes place thus in early S pahse there may not be 6 picrograms of DNA per nucleus.
G2 phase is before mitosis and thus the double amount of DNA is present in 1 nucleus
2007-02-24 19:02:40 · answer #2 · answered by lam_tensai 2 · 0⤊ 0⤋
s
2007-02-27 12:42:42 · answer #3 · answered by Vanessa D 1 · 0⤊ 0⤋