One Fish Two Fish Red Fish Blue Fish

One Fish Two Fish Red Fish Blue Fish Cathy Y. and Maya I. Class 718 Trefz

Once upon a time, there was an aquarium of red fish and blue fish. Their owner decided to buy them a huge aquarium. He filled it up with warm water and a lot of food so the new, huge aquarium was a suitable environment. He put a large igloo in the aquarium and all the fish were inside it. However, the two different colored colonies strangely did not intermingle.

The number of fish doubled because the environment was suitable and the aquarium was large enough.

One day, the igloo broke down by some freak, unexplainable accident. The two fish colonies venture away from the ruins of their old home. They discover that each fish in one colony has a different colored twin in the other colony. The twins buddy up and some of them trade scales as a sign of friendship.

The fish came to the center of the aquarium to play together. They had so much fun together. There were now red fish, blue fish, and red and blue fish all lined up at the center.

However, the fish thought it was too crowded at the center, so they split up into two even groups and swam away towards the two opposite sides of the aquarium to explore.

The owner bought two new igloos and put them on opposite sides of the aquarium. The two new colonies of fish swam into each of the two and stay put.

One day, the owner crashed into the huge aquarium and decided that it was taking up too much space. He purchased two smaller ones and put them in different places in his house. He put one igloo with the colony it housed in the first aquarium, and the other in the second.

For the time being, all the fish were perfectly happy. They lived their life, and did their jobs in the aquarium. They talked with their friends, and interacted with one another. The owner fed them regularly, and the fish kept on growing. Eventually, they became too big for their igloos, and accidently broke them.

In each tank, the fish came to play with each other again. They were glad to see some new faces, and some fish that they had met before. They got some decorative seaweed that was in the tank, and began to play tug of war. After, they were exhausted, all of them lined up in the center. They decided to go back to the opposite sides of the tank to rest.

When the owner returned, and saw what had happened, he was in shock. “These fish broke their homes again!”, he yelled out. But, there was no other choice for the owner, but to buy new igloos. Except, this time, he had to get 4. The owner was smart now, and bought 4 separate tanks, so that they wouldn’t overcrowd his house. He separated the fish evenly, and put an igloo in each tank.

The larger aquarium represents a larger cell. The warm water and extra food represent a suitable environment for the cell cycle to occur. The red fish are the paternal chromosomes and the blue fish are the maternal chromosomes. The colony doubles in number, representing synthesis. The igloo is the nucleus and breaks down during Prophase I. The fish pair up and exchange scales, showing homologous pairs exchanging genes. However, not all fish, or chromosomes, do the exchange. The fish meet at the center and are split from their twin to show Metaphase I and Anaphase I, respectively. The owner buying the two evenly split colonies two new igloos show the reformation of the nucleus. The separation of the two igloos into two new aquariums show Interkinesis. The two igloos breaking down again represent the beginning of Prophase II. The seaweed represent spindle fibers. The fish meet at the center to show Metaphase II. They decide to go back to opposite ends of the tank to rest, which represents sister chromatids splitting in Anaphase II. The owner buying four new aquariums each with its own igloo to evenly split the fish shows Telophase II. http: //www. yorku. ca/kdenning/++2140%202006 -7/meiosis. gif