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How Animals Have Changed Over Time Essay

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Some snakes have hip bones, this shows that they once had four legs like lizards, which are their close cousin (Karin Lehnardt). Species change over time because of competition, adaptation, and the environment. We can see this through the history. Competition can affect the way a species change over time because animals might get eaten by predators then they won't get to pass their genes onto the next generations. Adaptation will change a species over time because if the animals can’t adapt to the conditions they are in they will die, and not be able to pass on their genes or traits. The environment plays a factor in a species over time because animals may not be made for that environment. We can tell how a species has changed over time by looking at the history. All of these four factors can show us how a species has changed over time.
Individuals that win competitions are able to pass on their genes to future generations, which means they can pass their traits down. In the fruit loop activity, we found that the fit and fast individuals were more likely to survive. This is saying that the competition will change the species because the next generation will be more fit …show more content…

In the nova lab, scientists can trace back and look how different species are commonly related. Therefore, if the animals are closer together on the phylogenetic tree, they are more closely related. If they are on the same tree but further apart they have somethings in common. In the bunny lab, over time the different generations faced different challenges. This means that over time there were less and less of the trait of the rabbits that were getting killed. Another activity that changed in time was the anatomy lab, the amino acid sequence had changed over time. This is giving the future generations either new traits or they won't have that trait at all. Looking back at history, we can see how a species has changed over

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This meant that in the population there were already ten different color of prey that occurred naturally. However, when the environment was a blue background with colorful flowers and butterflies, many of the different colored prey had gone extinct and the red prey had the highest number of survivors. Also, environment two was pink, white, and black plaid and the prey that had the most number of survivors in that environment was white. This demonstrates that depending on the environment, different variations of a trait would be successful. It also demonstrates that the adaptations in this experiment depended on the environments.

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Again, humans are shown to be connected to the animal kingdom through the evidence of like genes in creatures that do not in anyway resemble the human

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The stickleback fish lab is a good example because they took the fish from two seperate places and had used a die to really see how different these fish are. The NOVA lab is also a good example because it shows the different trees of these species traits. DNA had affected these species greatly. These species have to be able to adapt physically and mentally to the environment and figure out how to live that way to be able to produce offspring. For example fish or a species have to adapt in their own ways.

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