Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.

What do a man, a mushroom, and an elephant have in common? A very long and simple double helix molecule makes us more similar and much more different than any other living thing. But, how does a simple molecule determine the form and...

Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.

Mutagenesis is the process of inducing mutations using physical, chemical, or biological mutagens, though mutations can also occur spontaneously during DNA replication. Physical mutagens include ionizing radiation (X-rays, gamma rays)...

DNA polymerases are the enzymes that build DNA in cells. During DNA replication (copying), most DNA polymerases can “check their work” with each base that they add. This process is called proofreading. If the polymerase detects that a...

DNA repair mechanisms like base excision repair (BER) and nucleotide excision repair (NER) fix damage by removing and replacing affected regions. BER removes a single damaged base using glycosylases (e.g., to fix deaminated cytosine),...

This video discusses the use of recombinant DNA technology in the production of therapeutic proteins. It explains how genetic engineering allows for the mass production of safe and effective versions of proteins that the human body...

The story of a race between two teams of scientists in the 1950s - Francis Crick and James Watson, Rosalind Franklin and Maurice Wilkins - desperate to be the first to unlock the molecular structure of DNA. Biology - Cells And DNA -...

The process of moving a section of DNA from one DNA molecule to another. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...

A video explaining and illustrating all steps of transcription.

A video explaining and illustrating all steps of DNA replication including an overview of replication, an explanation of the leading and lagging strands, and the replication bubbles.

This video is a lecture presentation on the process of genetic engineering. The presenter describes and discusses the steps involved in modifying the genome of a bacterium cell, and then evaluates some of the uses and...

Upon viewing the Traits and Heredity video series, students will be able to do the following: Define traits as the distinguishing characteristics of an organism. Describe heredity as the process of passing on traits from parents to...

This video provides an introduction to DNA and the genome. It explains what DNA is, the structure of DNA, and the different components that make up DNA. The video also describes how DNA is coiled up into structures known as chromosomes...

As always, the steps of DNA electrophoresis depend on your specific lab and protocol. Here, we look at the general theory of separating DNA on an agarose gel by electrophoresis and what it is used for in the lab. We will also learn about...

Transcription (Partial; no markings; as done in lab)

Mitosis for Anatomy and Physiology

In this video, we will explore the many similar terms in genetics that start with the letter, C: chromosome, chromatin, chromatin, and more.

In this video, we explore the mechanism of the Robertsonian Translocation with acrosomal chromosomes and its correlation to Down Syndrome (Trisomy 21).

Effect of Ethidium Bromide on Supercoiling & Electrophoresis

Effect of DNA Supercoiling on Agarose Electrophoresis

Introduction to DNA Supercoiling

The video is about protein synthesis, including the stages of transcription and translation. The video also covers the structure of an RNA molecule and how it is involved in protein synthesis. It goes into detail on the two stages of...

Remember how the Ninja Turtles came to be? Yes you do. It was the ooze! A radioactive ooze that mutated their DNA in just the right way to give them the ability to walk upright, talk, and do ninjutsu. Now, I'm as a big a Turtle fan as...