Laurence Moran discusses one of the most important mechanisms of evolution, Random Genetic Drift.

[Free Registration/Login may be required to access all resource tools.] A population is a group of organisms of the same species, all living in the same area and interacting with each other. Since they live together in one area, members...

Study the mechanisms that generate variation in prokaryote populations. Also learn about transduction, transformation, conjugation, as well as transposable elements.

Find out how evolution happens due to chance events. Explore the bottleneck effect and founder effect.

This is a college level lecture on genetic drift, complete with mathmatic formulae, includes special links.

Discusses common mutations that occur in the human population and describes the many different types of genetic mutations and their impact.

This article on phenylketonuria is organized into several sections including, "Clinical Description," "Molecular Geneticsm" amedicalnd "Population Genetics." Read about how this genetic disease affects the human body and how doctors...

This site discusses how genetic variability is correlated with the risk of organism extinction. It also discusses how bottlenecks can reduce genetic variability in populations leading to extinctions.

A set of notes explaining genetic pedigrees, otherwise known as family trees.

A general overview over the evolution of one population or one species over a short period of time.

Icelandic biomedical company, deCODE, owns exclusive rights to a genetic database of all Icelanders. Studying the genome of the entire population could reveal trends because Iceland is such an isolated and hardly migratory nation. As...

When a population is in Hardy-Weinberg equilibrium, it is not evolving. Learn how violations of Hardy-Weinberg assumptions lead to evolution.

Discusses conditions needed for the Hardy-Weinberg Law to hold true and demonstrates calculations involving allelic frequencies to illustrate this principle.

A geographic description of the Maghreb region of North Africa along with a discussion of the history, peoples of the area, religion, geography, and population genetics.

This is a solid review of basic principles of population genetics with an emphasis on plants. Use this to complement your units on evolution and plant biology. Take the quiz to check your understanding.

Genetic diversity is only possible with a healthy gene pool in a population. This resource explains the characteristics of a gene pool, why it is important, and factors that cause it to change. The examples provided demonstrate the...

[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.

A cross curricular unit focusing on how much and what kinds of foods are produced because of pesticides and genetically engineered foods. Students will investigate the impact on humans due to the new technology in food production. Topics...

How natural selection works at the level of genes, alleles, genotypes, & phenotypes.

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.

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.

This lesson plan focuses on differences in the amino acid sequence of hemoglobin and myoglobin proteins. They use the number of differences to create a phylogenetic tree.

Constructing phylogenetic trees may be a daunting task for students, but this lesson plan is a simulation of what molecular biologists must do to determine relationships. This plan is for students who have a good grasp of DNA structure...

This lesson plan requires learners 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.