SEEd Embryonic Development
Assessment
This assessment was adapted from a Utah Science Core Guides assessment exemplar. Standard: 7.5.4 Analyze data to compare patterns in the embryological development across multiple species to identify similarities and differences not evident in the fully formed anatomy. (LS4.A) Phenomenon The structure of a pig’s foot must function to support the large amount of weight that a pig has. While the structure of a mouse’s foot does not need to be able to support a lot of weight. Proficient Student Explanation of Phenomenon: In embryological development the mouse limb, which starts out very similar to the pig limb develops along different pathways as development continues. These changes likely contributed to the evolution of the pig limb skeleton. This development aids bearing weight (compared to the mouse) and one less digit per foot. Resources Original SEEd Assessment Exemplar 7.5.4 Image source for Question 5
The structure of a pig’s foot must function to support the large amount of weight that a pig has. While the structure of a mouse’s foot does not need to be able to support a lot of weight. Scientists compared the development of pig feet in embryos to mice feet in embryos. Digit loss/reductions (fingers and toes) are evolutionary adaptations in mammals such as pigs. To gain insight into these processes, you will perform a comparative analysis of limb development in mouse and pig embryos.
Topics and standards: Life Science, Biodiversity, Analyzing & Interpreting Data, Patterns, Grades 6-8, MS-LS4-2, 3D Science Tasks, Evolution & Species Dynamics, 7.5.4, Hosted Utah SEEd, 8-LS4-2, Assessment, 3.1.6-8.P