If there are 10 sister chromatids in a cell, which of the following is definitely true: a) The chromosomes are

If there are 10 sister chromatids in a cell, which of the following is definitely true:
a) The chromosomes are completely condensed
b) The mitotic spindle is fully formed
c) This is not likely a human cell
d) The cell is in G1, preparing for S phase

When someone goes outside and is sunburned, the cells that were exposed to the sun have all kinds of DNA damage. Which of the following might happen in the damaged, dividing skin cells?

a) Cyclin dependent kinases will be inhibited until the damage is repaired
b) The cells could arrest in G1
c) The cells could arrest in G2
d) all of the above

1. c) This is not likely a human cell
a) is incorrect because the cell might not be in metaphase or anaphase. It could be in G2 or early prophase.
b) is incorrect for the same reasons as a)
d) is incorrect because in G1, each chromosome only consists of a single chromatid--there are no sister chromatids until after S-phase.

2) d) is correct.