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Read the Fine Print
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(Complete Item Description)
- Abstract:
In modern systematics, both morphological features and DNA or amino acid sequences are used to determine phylogenetic relationships. This two-week exercise demonstrates two methods used by systematists to create phylogenetic trees. In the first week students score morphological features of fictional and real organisms, create data matrices showing number of synapomorphies, and then use the matrices to draw phylogenetic trees. In the second week they use Bio Workbench, an online bioinformatics software package, to create phylogenetic trees based on nucleotide or amino acid sequences. Students learn how modern systematics helps answer questions about ecology, evolution, and behavior.
- Subject:
- Science and Technology
- Grade Level:
- Post-secondary
- SubTopics:
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Green
- Collection:
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Association for Biology Laboratory Education (ABLE)
Read the Fine Print
-
(Complete Item Description)
- Abstract:
This exercise introduces students to analysis of evolutionary relationships both by analysis of molecular similarity and by cladistic techniques. The molecular analysis uses both paper-and-pencil and bioinformatics comparison of the amino acid sequence of the hemoglobin beta chain of eight vertebrates. The cladistic exercises introduce students to cladistic principles, and then allow students to solve hypothetical problems both with and without homoplasy. Students then test their cladistic ability by analyzing published data on the flightless birds. Finally, students solve an entertaining problem using "organisms" made out of nuts and bolts.
- Subject:
- Science and Technology
- Grade Level:
- Post-secondary
- Collection:
-
Association for Biology Laboratory Education (ABLE)
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