Embryo Sketches

NGSS Phenomena:
In the below image, a group of researchers drew pictures of the embryos of different animals at the same stage. The top row are all fish, middle row has two reptiles and a chicken. The bottom row are mammals. Think about the similarities and difference between these animals as you observe the images and answer the questions.
NGSS Phenomena: An image of 8 different embryo's heads, showing the similarities between the shape of each of their bodies.
References:

Richardson, Michael K. et al. “There is no highly conserved embryonic stage in the vertebrates: implications for current theories of evolution and development.” Anatomy and Embryology 196 (1997): 91-106.

1. One of the similarities scientists have found between embryos of different species that can be seen in this image is:

2.
The graph below plots the skull size of four different species over 360 days. The image below illustrates embryos of different animals at the same stage. Use the image below to compare the different species of embryo at the same developmental stage. Be sure to discuss two characteristics of the embryo. Then using the graph, analyze the data and identify whether it is linear or nonlinear.

3. How can we explain the difference between the similarities in how these living things look as embryos and how they look as adults?

4. What 3 characteristics or patterns in this image help you to see how all these living things are related?

5. Use different colors to help organize the information in the image to show similarities between the different embryos.

Color

Width

6. Explain how you used colors to organize the information in the image to show similarities between the different embryos.

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