In this informative site, homologous is defined and the wings of birds and bats are compared to clarify the concept.

This site is a section part of a website that accompanies "Evolution," a textbook by Mark Ridley. Here he covers homologous structures, using them as evidence for evolution.

A module explaining how two different organisms can possess similar traits by sharing a common ancestor(homology) or due to convergent evolution(analogy).

This lesson will explain how scientists can use homologous structures to identify relationships among different organisms.

These pages are part of a site called "Evolution," that accompanies a textbook by the same name. Mark Ridley is the author, and in this section he discusses the evidence for evolution.

This activity is designed for students to compare and contrast the anatomy of bird and human leg bones. Students will kinesthetically model walking like a bird to note the differences in the foot bones.

The alkanes, alkenes, alcohols and carboxylic acids are four different homologous series of organic compounds. Their different chemical properties are due to their characteristic functional groups. This lesson focuses on Alkanes...

This lesson plan involves comparison of amino acids to create a phylogenetic tree of primates. Students will also use other species information to draw conclusions about evolutionary relationships.

Take this interactive, multiple-choice quiz over evolution, then review your score and any missed questions at the end.

By examining fossils, scientists have collected evidence that supports the theory that species changed over time. As you read this article, study this evidence and critically evaluate whether it indicates that species may have arisen by...

Learn about several different forms of evolutionary evidence.

This project is a series of interrelated modules designed to introduce the student to modern biological techniques in the area of bioinformatics. Bioinformatics is the application of computer technology to the management of biological...