Problem :
What is the name of the structure that forms during prophase and is responsible
for aligning chromosomes in later mitotic phases?
During prophase a complex of microtubules organized around a centrosome forms
the mitotic spindle which is responsible for organizing chromosomes for later
separation.
Problem :
What is the most visible physical characteristic of cells in prophase?
Cells in prophase are marked by very dark, condensed chromosomes. This trait
can be seen under a microscope.
Problem :
What major event marks the beginning of prometaphase?
The breakdown of the nuclear envelope is the major event that starts
prometaphase.
Problem :
What is the name of the structure that forms on the centromere of a chromosome
during late prophase and prometaphase?
A kinetochore.
Problem :
What name is given to the microtubules that attach to chromosomes after the
nuclear envelope has been destroyed in prometaphase?
Kinetochore microtubules.
