Between 1968 and 2002, the total number of peppered moths decreased by almost two thirds, although scientists do now know why. In the 10th video of the series, the instructor defines evolution as any changes to a gene pool. Scholars then...

Viewers explore real-world examples of both evolution and natural selection as the instructor discusses changes to the environment, mutations causing changes in phenotypes and changing the fitness in organisms, and how humans are...

Did you know that your DNA can be damaged tens of thousands of times per day? Learn about the ways that damage to just one strand of your DNA can be fixed, or in extreme examples, result in genetic mutation such as cancer. 

High school learners read and discuss an article about genetic ancestry and genetic ancestry testing. They complete a paper and pencil activity that mimics the function of a DNA microarray and consider the ethics of genetic testing in...

Ever wonder how fish survive in freezing cold water—especially Antarctic waters? Some fish have an adaptation that lowers the freezing point of their life fluids. Learners model these adaptations in two lab explorations. The first...

AP® free-response questions are often challenging for scholars. Give them practice writing free-response questions using former questions from the AP® Biology exam on topics such as genetic mutations, cellular respiration, evolution, and...

How do changes in DNA affect an organism? Scholars explore chromosomes, genes, DNA, and mutations by modeling the DNA of a strawberry. They build a DNA model, then manipulate it to show how changing the genes transforms the strawberry...

Physical and biological factors affect everyday living. Scholars explore concepts such as electromagnetic forces, motion, the rock cycle, and geological changes. They examine cells as the building blocks of life and how organisms...

A lack of fossil records forces scientists to piece together the evolution of the big cats. The PBS Eons video lesson describes the processes scientists use to infer evolutionary details and predict possible species. Scholars get an...

How do genetic engineers determine which vector to use? Scholars research different vectors and their advantages and disadvantages in part six of six-part Gene Therapy: Molecular Bandage module. Then, in small groups, they determine...

Is it possible to use biotechnology to trick your body into fixing cancer-causing mutations? A video presentation discusses both traditional and new technologies that fight cancer. The amazing technologies are sure to intrigue viewers as...

Mutations often lead to genetic disorders. The tri-nucleotide repeat leads to an expansion of DNA thanks to errors in the process of DNA replication. Using the informative video, scholars identify genetic disorders related to this error...

What does a cell do when DNA is not copied correctly? An informative video shows budding scientists an example of a mismatch mutation during DNA replication. Viewers learn that to prevent a mutation from occurring, cells have mechanisms...

Just what exactly is sickle cell disease? A short, animated video explains how the cell adaption works, how inheriting the sickle cell trait can be an advantage in malaria-prone areas, and how sickle cell disease can be deadly.

Biotechnology changes lives every day, but how did it all start? Learn about Cohen and Boyer's technique for recombinant DNA and the founding of this new scientific study. Then, scholars use the online interactive to discover how Hanahan...

Not all hearts are the same, but their functions are similar. An instructor discusses the origin of the first organisms with a heart in a video lesson from the PBS Eons series. The lesson includes discussion of the evolution of the...

More than 90 percent of humans' DNA doesn't code for anything! Scholars watch a presentation as they answer questions relating to gene mutations. They read details, watch videos, and view animations supporting the concepts. The questions...

Can competing biological theories both be correct? Explore the two theories many scientists believed were opposing in a Crash Course History of Science video. The narrator covers both Darwin's and Mendel's genetics theories, the...

Does natural light damage or repair DNA? Learn the answer discover the scientists who researched the topic with an online interactive. Scholars read through an online animation presenting the content at their own pace. Then, they read...

A presentation of how engineering based in making something better led to engineering genetics. Scholars learn that genetic engineering began by selectively breeding plants that had specific characteristics to improve them. The video...

A red delicious apple tree with a simple mutation means we now benefit from the existence of golden delicious apples. Learn how simple mutations change genetic information in DNA sequences. Using biographies, videos, and animations,...

The average AP Biology score dropped in 2018 with the addition of more data tables and graphs. Offer additional practice free-response questions by using the questions from the 2018 AP exam covering phylogenetic trees, cell structure and...