Question

Draw a circle inside the plate to resemble the nuclear membrane.
2 – Place four sets of DNA into the nuclear membrane of
the cell. Draw on a sheet of paper what this model
step looks like using colored pencils. Label it
“Interphase.”
3 – Erase the nuclear membrane on the plate. Cross each
piece of DNA, within each set, to make a
chromosome. Draw two dots on each end of the cell
to represent the centrioles. Draw on your sheet of
paper what this model step looks like using colored
pencils. Label it “Prophase.”
4 – Line the chromosomes at the middle of the cell. Draw
spindle fibers as strings that connect to each center of
the chromosome or centromere. Draw on your sheet
of paper what this model step looks like using colored
pencils. Label it “Metaphase.”
5 – Pull the chromosomes apart to separate them on
each side of the cell. Erase the spindle fibers and
centrioles. Draw on your sheet of paper what this
model step looks like using colored pencils. Label it
“Anaphase.”
6 – Draw a circle around each set of chromosomes. Draw
a line to separate the cells. Draw on your sheet of
paper what this model step looks like using colored
pencils. Label it “Telophase.”
Write a paragraph explaining how your model represents mitosis.

Answer 1

My model represents the major stages of mitosis by showing how one nucleus with uncondensed DNA becomes two identical daughter nuclei. In "Interphase" the circle stands for the nuclear membrane and the four DNA sets represent replicated but uncondensed chromatin. In "Prophase" I crossed each DNA set to show condensation into paired sister chromatids (chromosomes) and added two dots for centrioles, which begin organizing the spindle. In "Metaphase" the chromosomes are lined up at the cell equator and spindle fibers (strings) connect to each centromere, illustrating the attachment that ensures equal segregation. In "Anaphase" the chromatids are pulled apart to opposite poles as the spindle shortens, representing the physical separation of identical sister chromatids. Finally, in "Telophase" I drew a nuclear membrane forming around each chromosome set and a line dividing the cell to show cytokinesis, producing two genetically identical daughter cells. Overall, the model emphasizes chromosome condensation, spindle attachment, equal separation, and reformation of nuclei—key events that ensure accurate distribution of genetic material.