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Product Information This set examines organisms that "stopped" evolving millions of years ago and have remained unchanged ever since. They were selected because scientists believe they also resemble ancestors that did not stop evolving. By studying them students can imagine some of the steps probably taken in the evolutionary road from primitive cell to human being. 1. Euglena (400X), Peranema (200X) 2. The simple colony - Pandorina (200X) 3. The simple body cavity - Eudorina (200X) 4. The simplest differentiation - Pleodorina (200X) 5. A dead end-Volvox (150X) 6. The simple tube-Hydra - wm/cs (14X and 100X) 7. The head forms-Planaria (3X) 8. The tube in a tube-Annelid worm (40X)  Tell a Friend about this item
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