Question

directions:

1. label the following diagram of mitosis of an animal cell.
2. during which stage of a cell’s cycle do the replicated chromosomes thicken and become visible?
3. in animal cells, which structure is thought to produce the spindle fibers that help separate the sister chromatids during anaphase?
4. is the structure you answered for question #3 found in plant cells?
5. the drawing below has been made from a photograph showing a cell undergoing mitosis. based on the drawing, in what stage of mitosis must the cell have been in?
6. using colored pens or pencils, show how 2 chromosomes are passed from the mother cell to the two daughter cells.

Explanation:

1. Labels the mitosis stages and key structures based on animal cell mitosis characteristics.
2. Identifies the stage where chromosomes condense into visible structures.
3. Names the animal cell structure that generates spindle fibers.
4. Compares presence of the structure between animal and plant cells.
5. Identifies mitosis stage by aligned, paired chromosomes at the cell equator.
6. Outlines the path of 2 chromosomes from parent to daughter cells during mitosis.

Answer:

1. Top left (stage): Prophase

Middle top (stage): Metaphase; (structure, center): Chromosome (with sister chromatids); (structure, poles): Centriole
Top right (stage): Anaphase
Bottom right (stage): Telophase
Bottom left (stage): Cytokinesis

1. Prophase
2. Centriole (centrosome)
3. No, plant cells do not have centrioles.
4. Metaphase
5. - Color the two diamond-shaped chromosomes (representing the mother cell's chromosomes) with two distinct colors.

• Copy both colored chromosomes into the second circle (cell in prophase/metaphase, with chromosomes replicated, so each diamond becomes a pair of identical colored diamonds attached at a center point).
• Draw one of each colored single diamond chromosome into each half of the dividing cell (anaphase/telophase).
• Draw one of each colored single diamond chromosome into each of the two final daughter cells.