Evidence for Evolution - Evolution III - 10/15/17

Weekly Blog : Victor N. 8B


Summary:

There are four lines of evidence for evolution: comparative anatomy, embryology, fossil records, and DNA. Comparative anatomy is looking at the similar and different features in different organisms and species. For example, if you look at the bones in humans, horses, cats, bats, birds, and whales (pictures above), you can see that they all have 4 parts in the arm. But there is a small difference in them. Humans and bats have 5 fingers, while a bird has 3 fingers. Embryology is looking at the development and embryos of species and comparing them. Fossil records are used to compare organisms in the past to organisms in the present, to show that they are different. Fossils records can also show how organisms acted and how that could apply to present plants and animals. DNA could be used to see how organisms are related to each other. Even if is a small change in the DNA, the organisms are still related because that is called a mutation. Evolution provides evidence that animals evolved and are related to each other through a common ancestor. 

SP2 - Using models

To understand the evidence of evolution, my group and I created a poster that showed the evolution of the Adventurian organism. Going back to the Cambrian era, we looked at the first organism. Through time, the organism grew legs and became a land animal, and split into two branches of grayheads which grew legs and whiteheads stayed as fish. As you can see, my group and I made a poster to show the evolution of the Adventurian organism, and to show the evidence of it. 

XCC - Patterns

Through the weeks of studying evolution, I have found many patterns in it. You can apply the four lines of evidence for evolution to an organism with the common ancestor to see how it evolved. You can use comparative anatomy to see that the physical appearances may seem the same. You can use embryology to see that the parts inside it may be the same or similar. You can use fossil records see how the structure of the organism and how it acts are similar and/or different. You can use DNA to see how the organism is similar in function. As you can see, I noticed these patterns in studying evolution. 

Multiplier

This week, I was a wanderer because I wanted to learn more about the topic we are studying, Evolution.

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