Biology Junction
Population Genetics
Genetic variation shows the health of a population, yet cheetahs show very little variation over that last 10,000 years. Scholars learn the importance of genetic variation in populations after viewing an informative presentation. It...
Howard Hughes Medical Institute
Survival of the Fittest - Variations in the Clam Species Clamys sweetus
It's not often that you come across a clever laboratory activity that is both imaginative and comprehensive! Using M&M's and Reese's peanut butter candies to represent two different clam species, young biologists test for "relative...
Howard Hughes Medical Institute
CSI Wildlife
Can DNA fingerprinting prevent the extinction of elephants? Young scientists learn about DNA fingerprinting before applying their knowledge to case studies of elephant poaching. The first case requires them to match the DNA from a tusk...
Curated OER
Genetic Variation Worksheet
Fill- in-the-blank, labeling, and short answer questions make up this well-written cell division worksheet. Neat diagrams of chromosomes and dividing cells are included. Junior biologists show what they know about reproduction, meiosis,...
Howard Hughes Medical Institute
Measuring Biodiversity in Gorongosa
Take your biology class' understanding of biodiversity to a whole new level! Ecology scholars use data to calculate three different diversity indices based on the organisms in the Gorongosa National Park. The four-part activity uses an...
Curated OER
AP: Chapter 23: The Evolution of Populations
How and why do populations change over time? AP biology aces explore this question by completing this assignment. They write the answers to 21 questions regarding population genetics, stability, genetic drift, polymorphism, and...
Howard Hughes Medical Institute
Understanding Variation
Does where we live influence how our bodies express genetic traits? Explore variation in human skin color with an activity that incorporate video and hands-on learning. Individuals model the relationship between phenotypes and genotypes,...
Howard Hughes Medical Institute
Color Variation Over Time in Rock Pocket Mouse Populations
Simple characteristic changes can have a significant impact on species survival. A hands-on activity has learners investigate the color variation in pocket mouse populations in different environments. They connect the timing and number...
Curated OER
People Are Like Peas in a Pod
Students experiment with pea pods to observe/appreciate the diversity of individuals within a population, and to explain of how dominant and recessive traits, genotypes, and phenotypes help produce variation in a population.
Curated OER
Allele and Phenotype Frequencies in Rock Pocket Mouse Populations
In the deserts of Arizona and New Mexico, some tiny creatures show just how quickly natural selection can turn a mutation into an advantageous adaptation. Watch a video about rock pocket mice, who show that one small change can make all...
Howard Hughes Medical Institute
Color Variation Over Time in Rock Pocket Mouse Populations
While many mutations are neutral, those that appear advantageous increase in frequency in a population. Scholars use illustrations to make predictions about populations of mice. They follow it up with a video to confirm or refute their...
Curated OER
Regents High School Examination: Living Environment 2007
Environmental science enthusiasts show what they know at the end of the year by taking this full-fledged final exam. They answer multiple choice, graph interpretation, and essay analysys questions, 73 of them in all. Topics range from...
Curated OER
The Effect of Natural Selection on Genes, Traits and Individuals
Rotating through five stations, evolutionary biologists explore the question of how changes in DNA facilitate the changes in a population over time. High-quality, colorful cards of animals, skeletons, skulls, and DNA sequences can all be...
Howard Hughes Medical Institute
Developing an Explanation for Mouse Fur Color
Whether or not you think mice are nice, you'll love the colorful activity! Scholars examine evidence for evolution in the rock pocket mouse through video, discussion, and collaborative work. Learners watch a video regarding variation in...
Personal Genetics Education Project
Scientific Themes in Personal Genetics
Humans can be tested for the presence of the BRCA gene, whose presence is an indicator that they have a greater chance of acquiring breast cancer than someone without the gene. Viewers have an opportunity to explore how genes and...
Curated OER
Selection and Variation in the Egyptian Origami Bird
Students investigate genetics and evolution of species. They simulate the breeding of birds using origami birds. In addition, using dice they introduce genetic variation into the species.
Curated OER
The Selection and Variation in the Egyptian Origami Bird
Students participate in a contrived natural selection simulation in which they build and modify simple paper airplanes. They study divergent and convergent evolution and how it is isolated in sub-populations.
Curated OER
The Value of Behavioral Variation in Homo sapiens
Students look at the behavioral characteristics of their peers from a historical perspective, and realize that, in the larger scheme of a community, these behaviors do have some value, and that a society as complex as ours does need the...
Curated OER
Genetic Variation
Students study families and their genetics. In this investigative lesson students explain how variations in genetics can be harmful and how some can help with survival.
Howard Hughes Medical Institute
Color Variation over Time in Rock Pocket Mouse Populations
A species-specific look at natural selection, the resource herein examines how adaptations have helped the population of rock pocket mice survive in a changing landscape. To begin, middle or high schoolers watch a 10.5 minute video,...
Curated OER
People Are Like Peas in a Pod
Students experiment with peapods to show the diversity of individual within a population. They examine dominant traits, recessive traits, genotypes, and phenotypes and show the process of making a Punnett Square.
Curated OER
Variations
Sttudents examine populations of living things and identify variations in physical features.
Curated OER
Population Dynamics of Growth of Drosophila
Students investigate population dynamics such as variation in density of females, composition of food sources an environmental factors such as light and temperature on Drosophila. They then relate their findings to human populations and...
Curated OER
Trait Variations for Survival
Young learners examine how different traits could give one organism an advantage over another. In groups, they view two different organisms in different environments. To end the lesson, they complete a Venn Diagram on the two organisms...