 | Central Question:What do different evolutionary paths look like and how can we map them? Guiding Thought Question: Explain one of the things that will complicate determining a specie's Center of Origin. Center of Origins: Geographic location from which a certain species expanded from. Today's Learning Objective: Students will work through a mapping activity to learn about the diffusion of animals and how to trace their evolutionary paths from a common center. |
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21 Comments
Maddy Kennedy
9/27/2018 12:32:23 pm
A lot of things could effect centers of origin. You have the whole Pangaea situation which could complicate things. On the first super continent the center could have been split up, sunk under water, covered in volcanoes, etc. etc. Then the whole human thing. We like to pick things up and put them different places they don't belong which can throw off our tracking system. Sorry I did two just to cover my bases.
Audrey Anderson
10/3/2018 08:54:36 am
Evolutionary paths look very different for each species and can be mapped genetically through cladograms. However to map geographically you can find the center of origin.
Tyler
10/3/2018 08:58:33 am
The biggest problem to find a species origin is human involvement. We have moved several different species around the world and have changed the genetics of some of the animals that we have moved
Erica
10/3/2018 08:59:10 am
The center of origin theory is problematic in the way that pangea would've split everything up, and plants don't move to places very fast, to the pangea probably would have already been far enough apart that certain plants wouldn't be able to populate certain place.
Maddy Jaksha
10/3/2018 09:01:36 am
Many species have been affected by other things, so the theory is not able to explain everything including how humans have changed things and moved species and such
Myo Ka Zin Soe
10/3/2018 09:02:57 am
The bigggest problem to finding a specie’s center of origin is human involvement. Humans love to bring things back with them as proof for going to a certain place. This means that the animals or plants they find will start growing in the new area they brought it in.
Olivia Wagner
10/3/2018 09:03:16 am
One thing that will complicate determining a specie’s center of origin is human interaction. Humans have moved animals to different areas where they shouldn’t be and breed them how they wanted to, so it can be hard to determine their center of origin
Julie
10/3/2018 09:03:21 am
One thing that will complicate a species' center of origin is how humans have become involved with certain species' lives and locations.
Haley Estlund
10/3/2018 09:05:18 am
many many things can create changes in centers of origin in different animals. Humans for one can create huge changes in where animals live. we enjoy pretty plants and animals so when we find a new land we like to take them there with us. Horses were originally from Europe but now here they are, thanks to humans which can mess up how to find the origin point.
Hannah
10/3/2018 09:07:25 am
One of the things that will complicate determining a specie's center of origin is the interactions and involvement the species has with humans. Humans can be very destructive, so when it comes to the movement of species around the world, humans have a major impact because they're destroying the environment and habitats for many different species.
natalie wiles
10/3/2018 09:10:00 am
one thing that can effect the center orgin of animals is the splitting of the earth and human interactions and how we treat the earth
Tyrece Griggs
10/3/2018 09:10:36 am
One thing that can cause us to not be able to figure a species center of origin is that we once had pangea where it was one huge landmass, now pangea has been broken up into 7 continents and has spread things all around.
Katherine Casey
10/3/2018 09:11:09 am
Evidence. Despite the large number of found fossils, it is only a small percentage of historical life. Understanding and obtaining genetic samples is also difficult. Linking them to past life is even more so. Until (and perhaps not even then) technological advancements, most of what we can learn is through speculation and educated guesses.
Katherine
10/3/2018 09:14:39 am
Nearly everyone mentioned humans, but the major effects of humans only span a few thousand years. Didn't you all agree that the origins of species go back much further than that?
Sad Nyx
10/3/2018 09:23:40 am
Well humans can only use the clues they get from research they do and evidence, but if there is no evidence, or anything found to contribute to research? Then they just have to guess or wait to develop tech that get them the research they need.
Hunter Danner
10/3/2018 09:26:46 am
it could be difficult to determine a species origin because of Pangea breaking apart into the continents.
Eleanor Dunning
10/3/2018 09:31:54 am
Many factors change how we think about a specie's evolutionary path. For instance the splitting of Pangea is really what most people think of because that's what we picture when we talk about animal diversity. However as humans we've moved animals around the world and have affected quite a bit.
Grace Bieber
10/3/2018 09:31:55 am
One of the biggest issues in mapping animal paths of origin is human influence.
Kinlee
10/4/2018 12:15:07 pm
A few things might make things complicated like evolution in the way that you may not find the exact animal you are looking for but you will find something similar. Also the fact of the different changes in earths surfaces might also contribute to the difficulty
Parks
10/4/2018 01:11:36 pm
The whole continental drift theory is an issue. If a species center of origin is on the edge of where two continents have since split, then it would be really hard to find that center of origin.
Tyrece Griggs
10/16/2018 09:05:26 am
One thing that can effect determening the center of origin of a species is that animals move and when they move its kind of hard to track where they came from Leave a Reply. |
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