Fish Genes

The data that has been received was fantastic. It was all about a fish habitat and its changes.There were twelve fish. The gene pool provided the genes: GG, Gy, Gr (Green) is dominant), rr(red) is recessive to green but co-dominant to yellow), yy (yellow) is recessive to green but co-dominant to red) and ry (orange). These colors were the colors of the fishes' scales. In the first generation, 58% (7) of the population were green fish, 17% (2) were red fish, 8% (1) were yellow fish and 17% (2) were orange fish. However, yellow fish are easy to be seen in the natural habitat, therefore, they were eaten. The second generation only contained 11 fish. In the habitat, 63% (7) of the population were green fish, 9% (1) were red fish, 18% (2) were yellow fish, and 9% (1) were orange fish. Again, the yellow fish became dinner and were eaten. The third generation had 8 fish: 63% (5) of the fish were green and 37% (3) of the fish were red.

Suddenly, a natural disaster occurred, all the green fish died. Therefore, there were only 2 red fish surviving. One way the habitat could have changed is that the algae changed to a different color other than disappearing. If they turned brown/yellow, it would've been better protection for all the fish. However, protection for all the fish would mean no food for the predators. Therefore, all predators would die and the fish would overpopulate. Another way the lab would change is if the green allele was NOT dominant. Then there will be a more variety of fish. In the end, the lab taught a valuable lesson of allele combinations and habitat life.