PBS
Cosmic Microwave Background Challenge | Space Time | PBS Digital Studios
If a photon leaves the train station shortly after the Big Bang ...
PBS
The Cosmic Dark Ages
In astronomy we study things that are very far away. It’s a powerful challenge because even the brightest objects are almost impossibly faint when you view them from the other side of the universe. But there’s an up side. If the light...
PBS
Pulsar Starquakes Make Fast Radio Bursts? + Challenge Winners! | Space Time | PBS Digital Studios
Fast Radio Bursts were puzzling physicist for quite some time. They were thought to be the result of large cataclysmic events such as supernovae, but this theory was proven wrong when it was discovered that they could repeat themselves....
PBS
Cosmic Microwave Background Explained
HAS SPACE ALWAYS BEEN BLACK? As long as we've been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding our clocks back to the early days of the universe. Near the beginning of the universe, when...
SciShow
Colorado's Bright Yellow River, and Why Fruit Flies Mate
This week on SciShow News, toxic waste from an abandoned mine turned a river yellow, and new research shows that threatened fruit flies may have more diverse offspring.
SciShow
Colorado's Bright Yellow River, and Why Fruit Flies Mate
This week on SciShow News, toxic waste from an abandoned mine turned a river yellow, and new research shows that threatened fruit flies may have more diverse offspring.
SciShow
COVID Variant Recombination: Threat or Achilles Heel?
Scientists may have found a recombinant variant of COVID-19 in the wild, and its mixed DNA could be essential to the coronavirus life cycle.
SciShow
Why Billions of Passenger Pigeons Died in Under a Century
How could the most abundant bird in North America go extinct so quickly? Short answer: us.
TED-Ed
TED-Ed: What can DNA tests really tell us about our ancestry?
Two sisters take the same DNA test. The results show that one sister is 10% French, the other 0%. Both sisters share the same two parents, and therefore the same set of ancestors. So how can one be 10% more French than the other? Tests...
SciShow
Twins x Twins = Twins?
At SciShow, we ask the tough questions. Today we explore the answer to the question "if identical twin brothers married identical twin sisters, would their offspring be identical?"
Crash Course
Meiosis: Where the Sex Starts - Crash Course Biology
Hank gets down to the nitty gritty about meiosis, the special type of cell division that is necessary for sexual reproduction in eukaryotic organisms.
Bozeman Science
Genetic Recombination and Gene Mapping
In this video Paul Andersen explains how the frequency of recombination between linked genes can be used to determine the relative location of genes on a chromosome. Thomas Hunt Morgan and Alfred Strutevant used the fruit fly to develop...
Curated Video
Recombination
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...
Curated Video
How LEDs Work - Unravel the Mysteries of How LEDs Work!
How do LEDs work? In this video, we'll explain LED technology in an easy to understand way. We'll cover the different types of LED lights, the different colors that LEDs can emit, and the different applications for LED technology and how...
Curated Video
What is Evolution: A REALLY SIMPLE and Brief Explanation
Evolution “is the net change in organisms or a population over the span of many generations.” This change in organisms or populations happens through DNA mutations and reconbination and is passed down to the next generation through...
Professor Dave Explains
Gene Linkage and Genetic Maps
We just learned about X-linked genes, but what about gene linkage in general? If two genes are on the same chromosome, we can say that they are linked. Are they always inherited together? Can the alleles rearrange in some way? Well don't...
Other
Southern Methodist University: Animated Molecules
QuickTime movies and images of many different molecules including DNA, RNA, histones, nucleosomes, etc. Includes links to publications for more info on each molecule.
Howard Hughes Medical Institute
Hhmi: Biointeractive: Sex Determination: Meiosis
See how an X or Y chromosome carried by a sperm cell, determines the sex of the offspring in this video. [5:52]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Sex Determination: The Y Chromosome
In this animation, discover the palindromic gene sequences of the human Y chromosome. [2:45]