Variation between species: The curious question of the Cristobal iguanas

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Science Evolution and genetics

Variation between species: The curious question of the Cristobal iguanas

This activity investigates the marine iguanas of San Cristobal and how and why there are two distinct populations from one common ancestor.

Introduction English resources Spanish resources Related resources

Introduction

Learning objectives

Science: Understand the process of heredity.
Explain how variation between species can drive natural selection.
Understand how environmental changes can lead to changes in species.

Students’ outcomes

To understand and explain how the San Cristobal iguanas became physically and genetically two separate species.

Resources in English

Cristobal iguanas lesson plan for 11-14 years

The curious question of the Cristobal iguanas

Available downloads

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Resources in Spanish

Variacion entre especies - Plan de estudio 11-14

El tema curioso de las iguanas de Cristóbal

Available downloads

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