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WARD’S Males and Females: How Structure and Function Are Related Lab Activity |
Compare and Contrast Structural Differences Between the Two Sexes |
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Observing two isolated specimens of Nasonia, students note differences in the organisms’ structure and behavior. After the two organisms are introduced into the same environment, the students are asked to determine which organism is the male and which is the female based on the reactions and behavior of the two organisms. Students will then conduct a post-lab analysis, which will direct them through a discussion of how the structural differences provide a functional benefit to each sex. The kit includes enough materials for 15 setups, a teacher’s guide, and student copymaster. Note: Includes perishable materials. Please specify delivery date.
Commonly called the jewel wasp, Nasonia are small wasps that do not sting or bite. You can use Nasonia to teach topics covering:
• Scientific Method and Techniques
• Genetics
• Behavior
• Selective Advantage
• Biotechnology
Nasonia are better and more interesting study subjects for several reasons:
• Mutants are observable without dissecting scopes
• They are easily sexed in either the pupal (thus ensuring virgin females) or adult stage
• They tend not to fly like Drosophila
• You can arrest their life cycle using refrigeration to work around your class schedule
• Haploid males make all crosses appear sex-linked
• They exhibit ritualistic courtship and mating behaviors
• They have a parasitic life cycle
• They are easy to culture and maintain
You can study the world of Nasonia through the Nasonia Project, a comprehensive set of inquiry-based lab activities available only from WARD’S.
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