How do cells know when to replicate, transcribe, and stop? James E. Darnell, Jr. shifted from studying medicine to biochemistry and decided to address this mystery. Learn about his research, discoveries, and the impact on future medical...

Teach young biologists the language of life with this series of worksheets on DNA. By working through these pages, students expand their understanding of genetics as they learn about the process of transcription and 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 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,...

What is the best way to prepare for an AP® exam? Learners become familiar with the AP® Biology exam by completing a full-length practice exam. The AP® test prep by the College Board contains multiple choice, grid-in, and free-response...

Young scholars explain why cells reproduce and draw a diagram of each of the stages in mitosis. They put the stages of mitosis (interphase, prophase, metaphase, anaphase, telophase, and cytokinesis) in the correct sequence, from the...