試題詳解

16. Which statement about the cell cycle in eukaryotes is true?
(A) In S phase, the cells contain two copies of each chromosome, the normal dipoid state of a cell
(B) During G1 phase, the DNA is replicated and form chromatin structures.
(C) During cytokinesis, chromatids have been separated into two cells and the nuclear envelope reforms
(D) During G2 phase, the spindle forms and each chromosome aligns independently for seperation