Onion Root lab

Intro

  What is mitosis?  Mitosis is nuclear division and produces two identical daughter cells during the 5 major steps interphase, prophase, metaphase, anaphase, and telophase.  

Phases

Interphase: Cells may appear inactive during this stage, but they are quite the opposite. This is the longest period of the complete cell cycle during which DNA replicates, the centrioles divide, and proteins are actively produced.

Prophase:  During this first mitotic stage, the nucleolus fades and condenses into chromosomes.  Each replicated chromosome comprises two chromatids, both with the same genetic information.

metaphase:    Tension applied by the spindle fibers aligns all chromosomes in one plane at the center of the cell.

anaphase:     Tension applied by the spindle fibers aligns all chromosomes in one plane at the center of the cell.

Telophase:    The daughter chromosomes arrive at the poles and the spindle fibers that have pulled them apart disappear.

This is the results on the lab that we did.   We got one onion root and put it under the microscope, and started to count the different types of phases.  It came out similar to the percents that we found online.  So I would say it came out pretty accurate.  It was an interesting lab because it came out so clear on the different stages.  The phases looked just as they did in the pictures of examples.