Evidence of Evolution: Homologous Structures Worksheet

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Comparative anatomy worksheet – students find that even though the FUNCTIONS are different, the STRUCTURES of vertebrate forelimbs are similar.

NGSS Standards: MS-LS4-2, MS-LS4-3, HS-LS4-1

In this activity, students will:

• Color code the bones in the forelimbs of 6 animals to observe their similarities
• Compare and contrast the STRUCTURE and FUNCTION of the forelimbs by completing tables and answering questions

Teacher Notes:

• INCLUDES AN ANSWER KEY.
• Please note: This homologous structures worksheet is not editable.
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Related Standards:

• NGSS MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence, diversity, extinction, and change of life forms throughout the history of life on Earth under the assumption that natural laws operate today as in the past.
• NGSS MS-LS4-2: Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.
• NGSS MS-LS4-3: Analyze displays of pictorial data to compare patterns of similarities in the embryological development across multiple species to identify relationships not evident in the fully formed anatomy.