Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
    
Click to return to the Evolution Home Page
darwin change extinction survival sex humans religion
Online Lessons for Teachers: Learning Evolution
 How Does Evolution Work?
 Scientific Terms

Allele(s)

Dominant Allele

Emigration

Evolution

Gene

Gene Frequency

Genotype

Hardy-Weinberg Principle

Heterozygous

Homozygous

Hypothesis

Immigration

Mutation

Natural Selection

Population

Recessive Allele

Species

Sexual Selection

Picture a giraffe nibbling leaves from the top of a tree, or a beaver adding a branch to its dam, or a peacock spreading its magnificent tail feathers. These and the millions of other organisms on Earth are the products of evolution. In this lesson you will go beyond a definition of what evolution is and examine how it works. You will study natural selection and mating patterns to see how these forces influence evolution.

Image of a rabbit.

Activity 1: Breeding Bunnies
Complete a hands-on lab simulation of natural selection. Learn about the impact that natural selection can have on a breeding population of rabbits.

Teacher Notes


Image of fish.

Activity 2: Flashy Fish
Perform an online laboratory simulation and examine the interplay between natural and sexual selection in a population of wild guppies.

Teacher Notes


Additional Activities
Explore a range of mating behaviors and the concept of genetic drift.

Videos Web Activities Site Guide About the Project FAQ Glossary Site Map Feedback Help Shop