Grossmont College Hominins in The News Discussion Board

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Grossmont College

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3.7 Discussion Board Hominins in the news 78 One of the main characteristics that define the hominin tribe is their bipedal tendencies. However, as you have noted in the reading for this week's assignment, not all hominins had the same bipedal capabilities. Early hominins can be defined as being at various stages of transitioning into bipedalism while many later forms are effective bipedal runners. As new information is discovered our understanding of hominin evolution changes. For this discussion board, you will have to look for new hominin related discoveries that have made the news. I would like you to look for a news story about hominins. Make sure that the news story on hominins covers the following time frame 6 million to 1 million. 1. Give a summary of what you read. In one short paragraph tell the class what the news was about. Include the following points. 1. Name the species in question. 2. Where was found? 3. Tell me why it made the news. 2. Make sure you cite your information. 3. Respond to at least one other student’s posts. 1. In your posts briefly explain to the other student why that post is important to the understanding of human evolution. Beginning in the late Miocene and into the early Pliocene, upright walking tendencies began to develop among the hominin tribe. Upright walking tendencies slowly transformed into obligate bipedalism during the pliocene within the hominin lineage. This shift in locomotor strategy is notably marked by the gradual change in arm to leg ratio that we see when comparing early and later hominins. Early hominins have short legs and very long arms while later hominins have longer legs and short arms. What you are doing. Your task for this activity will be to compare and contrast the locomotor strategies of the following three hominin species: ​Ardipithecus ​ramidus​, Australopithecus ​afarensis ​and Homo ​erectus​. You will accomplish this by answering the questions below Use the following resource for ​Ardipithecus (Links to an external site.) (Click) Use the following resource for ​Australopithecus (Links to an external site.) (Click) Use the following resource for ​Homo erectus (Links to an external site.) (Click) Before you begin make sure to view all unit material so that you can give me informed opinions. What you are doing for points. Before you begin make sure view all relevant reading material so that you can give me informed opinions. 1. Which hominin had the best arboreal capabilities? Make sure you explain your answer by talking about ​only one ​feature that backs up your claim. Choose ​only one​feature from the lower extremities (Legs and feet). 2. Which hominin was the first to have feet that are effective for habitual bipedalism? Briefly explain what makes their feet more effective for bipedalism when compared to previous hominins. 3. Which hominin had the best anatomy for running on two legs? Briefly explain how you would know and tell me about ​two ​specific skeletal features that suggest that your chosen species was running on two legs. 4. Lastly, I would like you to ​give a short summary ​of the notable evolutionary changes in locomotor strategy (the way that you move around) that you notice occur over time as seen from the perspective of Ardipithecus ​ramidus​, Australopithecus afarensis a ​ nd Homo ​erectus​. Grading rubric Click on the ​"Gear icon"​ located in the top right-hand corner and then click on ​"Show Rubric"​ to view the grading requirements for this discussion. Tips for success ● ● ● Please keep your answer to only what is asked in the assignment. I recommend composing your content offline in a text editor and then copy and paste the text into your reply post. If something happens you will have an offline copy of all of your hard work! I highly recommend using Google Docs (Drive) to compose offline, as Google plays well with web-based forums. If you are using Microsoft Word to compose offline, you may need to do some editing to the format when you paste it into the reply. Rubric
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Explanation & Answer

This is the first DQ!

DQ 1:
Article for reference:
https://www.scientificamerican.com/article/how-scientists-discovered-the-staggering-complexity-of-huma
n-evolution
The article states the staggering evolution of the hominin species, with respect to the size and capacity of
their brain. The Brain size almost tripled, yet this change is seen to happen in the past two million years.
Yet, a more backward evolution was also observed. ​Homo floresiensis lived on the island of Flores in
Indonesia. This species had a comparatively small brain for a member of the ​Homo genus, almost the size
of a chimp. Yet, it could make stone tools and hunt animals. This was an exception to the trend
researchers had previously thought of, the ​Homo’s ​expansion of the brain through its evolution. This also
disproved the wide view that evolution was linear, and that there might have been some staggering
devolution due to the resources and environment that the branch of...


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