Answer:
The model represents the change in the DNA content of a cell during the cell cycle. Which part of the model represents the S phase? Telophase is a stage of a cellular process that begins after the chromosomes have moved to opposite poles of the cell.
Explanation:
Out of the choices given, the step that caused an aerobic atmosphere during the history of Earth was the origin of photosynthetic prokaryotes. The correct answer will be D.
