Evoblog Ch. 17

     The land will come together again. The environment will cause many animals to evolve to be able to survive in the environment better. The middle of the giant stretch of land will be a desert. Many of the animals will become bigger in size, the the turtle. The fish will be able to go out of the water. The squid will be able to swing from the trees. Also, scientists predict that snails will be able to hop to move, instead of crawl.

Ch. 16 Blog

How does natural selection work on polygenic traits?

Natural selection depends on the bell curve when working with polygenic traits. It relies on directional selection, disruptive selection, and stabilizing selection. Individuals at the higher part of the bell curve have a higher chance of surviving, growing, and reproducing. Thus, they are the ones who pass on their superior fitness and traits.

Evolution Weblab: Phylogeny

Life is related by common ancestors. Species may not look the same. That is because over millions of years, evolution occurs. Throughout the years, characteristics of a species can appear or disappear. For example, I may not look like my ancestors 100 generations ago.

In this weblab I learned about how life is related. The relationship of organisms can be shown by using a cladogram. There were files that explained to me how it worked.

Rating: 8/10. I already learned everything that was mentioned. It was not very captivating.

Evolution Weblab: Dating

Carbon dating is when scientists use the decay of carbon-14 to find out how materials are. It was a technique developed by Willard F. Libby. In this weblab I learned about radioactive decay. I learned about how scientists can use the decay of carbon-14 to date artifacts. I learned this by answering questions in the weblab.

Rating: 6/10. It was educational but it was extremely boring. There was a lot to read and a lot of multiple choice questions.