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Toxic Circumstances

Using Bioinformatics to Understand Natural Selection

By Parks Collins, Jason Macrander

Toxic Circumstances


 

Abstract

This interrupted case study tells the true story of Karl P. Schmidt, a herpetologist and museum curator who was bitten by a venomous snake in 1957. Like a true scientist, Schmidt recorded notes about his symptoms until the very end when he died. Students will examine information about his death in order to learn how venom pathways are related to genes, transcription, and translation. By studying venom pathways, students will examine the relationship between natural selection and the genetic and molecular processes responsible for generating the observed diversity in toxin composition and action. The final two sections of the case focus on bioinformatics. Students will explore the fields of genomics, proteomics, and systems biology by analyzing venom proteins using the Basic Local Alignment Search Tool (BLAST). Originally designed for a general biology course for majors, the case is also suitable for a non-majors biology class.

   

Date Posted

05/16/2019

Overview

Objectives

  • Develop a deeper knowledge of transcription, translation, and protein synthesis.
  • Define gene duplication.
  • Recognize that snake venom has multiple components that have different effects on body function.
  • Search for specific proteins in BLAST site.
  • Analyze BLAST results.

Keywords

Venom; snake; bioinformatics; evolution; toxin; natural selection; boomslang; snake; Dispholidus typus; BLAST; Weiss; Karl P. Schmidt

  

Subject Headings

Biochemistry
Bioinformatics
Biology (General)
Ecology
Evolutionary Biology
Molecular Biology

EDUCATIONAL LEVEL

High school, Undergraduate lower division, Undergraduate upper division

  

FORMAT

PDF

   

TOPICAL AREAS

Ethics, Scientific argumentation

   

LANGUAGE

English

   

TYPE/METHODS

Interrupted

 

 

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