There are 4 chromosomes that are visible at the beginning of Mitosis.
The median for group 2 is almost double the median for group 1. Group 2's median would be 80, and 1's would be a little over 40, which is about half. The median is the middle line of the box on the graph.
Striped, one nucleus and smaller than skeletal muscles.
Hope this helps, God bless <3