[Free Registration/Login may be required to access all resource tools.] Describes three of the four forces of evolution: mutation, gene flow, and genetic drift.

The tutorial explores adaptation. Topics examined are evolution, co-evolution, variation within species, and mutation. Definitions, examples, and pictures on the concept are included.

Try this interactive module from the Brooklyn College to help understand the genetic code and how changes in the code effect the final protein product.

This unit discusses the following topics: cloning, transgenic, gene therapy, genetic code, human genome and DNA replication. It contains 19 interactive activities.

This interactive site provides animations and activities in several areas of physiology. The images are simple, but clear. The accompanying text provides a good description of the process being shown.

These pages are part of a site called Evolution that accompany a textbook by the same name. Mark Ridley is the author. This section has an advanced discussion of determining allele and genotype frequencies using the Hardy-Weinberg ratio.

Learn about virus evolution and genetic variation in viruses.

Take an interactive quiz over DNA. After completing the quiz, check your score, and then revisit any incorrect question for further review.

This lesson plan requires students to analyze DNA restriction maps to determine the differences in the sequence for several primates and humans. They then use the information to create a cladogram.

Teach aliens about evolution as you play this game, and review your own understanding in the process. Topics covered include evolutionary mechanisms, evidence of evolution, natural selection, reproductive isolation, population genetics,...

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.

Find out about the chromosomal basis of sex determination, X and Y chromosomes, and X-linkage.

This article gives information about sickle cell anemia, a disease caused by mutations of the gene that forms red blood cells. Provided are answers to the following questions: "What Do Doctors Do?" and "What Can Teens Do to Stay Well?"

Presents information about human chromosomes, their structure, and genetic disorders that can result from mutations.

Explains what chromosomes are, their structure, their functions within a cell, and the health impact of mutations in a gene sequence.

Enjoy the images of this beautiful bird while learning more about its characteristics and lifestyle.

This brief site discusses symptoms, treatment, hereditary condition, and a doctor who made a difference by spearheading a groundbreaking study of sickle cell anemia and infections.

Starts with a definition of Punctuated Equilibrium, followed by an explanation of this "Observation," and how it fits with other evolutionary theory.

Follow the progression of a malignant tumor, beginning with the first mutation within a cell and ending with metastasis, the colonization of related tumors throughout the body.

Six sonnets by the American Romantic era poet, including "Midsummer," "October," "November," "To an American Painter Departing for Europe," "Mutation," and "William Tell."

Homeotic genes control development of whole body segments or structures. When they are overactive or missing, weird things can happen!

Practice questions over repetitive nerve stimulation in Myasthenia gravis patients.

Prolonged space travel plays a severe toll on the human body: microgravity impairs muscle and bone growth, and high doses of radiation cause irreversible mutations. As we seriously consider the human species becoming space-faring, a big...

Take a closer look into the modern view of evolution. This article includes many pieces of evidence, all which support the theory of evolution.