AP Biology
A biologist measured the amount of DNA in several single diploid cells taken from a culture. He knew that these cells could divide mitotically, but not meiotically. His data is shown below: Cell Number and DNA content in micrograms: Cell 1 (11.1 micrograms) Cell 2 (5.4 micrograms) Cell 3 (7.3 micrograms) Cell 4 ( 10.9 micrograms) Cell 5 (5.6 micrograms) Cell 6 (8.6 micrograms) Cell 7 (11.0 micrograms) Which of these cells have most likely just completed mitosis and cytokinesis?
Reply
Answers
Cell 1 (11.1 micrograms) and Cell 7 (11.0 micrograms) have most likely just completed mitosis and cytokinesis. This is because DNA content is usually the same in daughter cells after mitosis, so cells with the same amount of DNA likely just completed the process. In the cells listed, Cells 1 and 7 have the same amount of DNA and therefore they are the most likely candidates for having just completed mitosis.
