Question

three purposes:

1. ______________ 2. ____________ 3. ______________

one cell divides and gives rise to two genetically identical daughter cells. the cell divides in phases (pmat).

phase	description	draw a picture of the cell in this stage
metaphase	the chromosomes line up along the middle.
anaphase	chromosomes pull apart to the different sides of the cell.
telophase	cell begins to divide – called cytokinesis<br>spindle breaks down and nuclear envelope reforms.<br>two identical cells are formed.

Explanation:

This task outlines the key events of each phase of mitosis (PMAT) and asks for visual representations. Below are clear, simplified descriptions of what to draw for each stage, aligned with the provided phase details:

1. Prophase: Draw a cell with a broken-down nuclear envelope, condensed thick, double-stranded chromosomes scattered inside, and centrioles at opposite ends of the cell with spindle fibers starting to form.
2. Metaphase: Draw a cell where all the condensed double-stranded chromosomes are lined up perfectly along the central midline (equator) of the cell, with spindle fibers attached to the chromosomes and centrioles at the poles.
3. Anaphase: Draw a cell where the single-stranded chromosomes (formerly the two halves of double-stranded chromosomes) are being pulled apart by spindle fibers, moving toward the opposite centriole poles at either end of the cell.
4. Telophase: Draw a cell that is pinching in at the middle (cytokinesis), with two new nuclear envelopes forming around the separated chromosomes at each end, and spindle fibers breaking down. You can also draw the final state where two separate, identical small cells are fully formed.

Answer:

Prophase Drawing Guide:

Cell with broken nuclear envelope, condensed double chromosomes, centrioles at opposite poles, and early spindle fibers.

Metaphase Drawing Guide:

Cell with double chromosomes lined up along the cell's central midline, spindle fibers attached to chromosomes, centrioles at poles.

Anaphase Drawing Guide:

Cell with single-stranded chromosomes pulled apart, moving toward opposite centriole poles via spindle fibers.

Telophase Drawing Guide:

Cell pinching at the middle (cytokinesis), two new nuclear envelopes forming around separated chromosomes; final state: two identical, separate cells.