In this episode of Crash Course Biology, we’ll learn about the ways population genetics reveals how groups of living things evolve—by comparing genetic similarities and differences. We’ll discover the most genetically diverse species of...

Mr. Andersen explains Hardy-Weinberg equilibrium and describes the bead lab.

Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation.

In this video Paul Andersen explains how you can combine the power of a Punnett square for an entire gene pool. Hardy-Weinberg equilibrium will remains constant under several constrains and the probability square makes the information...

Remember how Darwin and Mendel lived around the same time, but everyone forgot about Mendel until 1900, and even then biologists saw Darwinism and Mendelism as two competing grand theories about how life works? Well, in this episode of...

Hank guides us through the process of natural selection, the key mechanism of evolution.

It explains Hardy-Weinberg principle including concepts such as founder effect, bottle neck effect and Hardy-Weinberg Equilibrium.

LEAD IN: Scientists at the University of British Columbia say they've found a genetic mutation that causes a severe form of multiple sclerosis. The team claims it shows at least one form of multiple sclerosis is inherited and could they...

AP Television Bountiful, Utah, USA - March 7th, 2011 1. Various of Elizabeth Marston playing football with her father in front garden 2. SOUNDBITE: (English) Elizabeth Marston: " I hope I can be in the Olympics because I love soccer...

Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.For years, researchers have known that...

FOR CLEAN VERSION SEE STORY NUMBER: 4038099LEAD IN: Scientists at the University of British Columbia say they've found a genetic mutation that causes a severe form of multiple sclerosis. The team claims it shows at least one form of...

AP Television FILE Undated, Cordoba, Argentina 1. Various aerials of flooded agricultural land 2. Close pan from one withered plant to another 3. Wide of arid dry land with cattle grazing in background 4. Wide of desertified land AP...

1. NIGHT SHOT Exterior of Metropole hotel, location for World Health Organisation press conference 2. Journalists at press conference, then pan to speakers seated at table 3. Mid shot of speakers 4. Cutaway of journalists 5. Close-up of...

Doha, Qatar - April 10, 2003 1. Brigadier General Vincent Brooks and Renuart arrives for briefing 2. Cutaway media 3. SOUNDBITE (English) Air Force Major General Gene Renuart, Director of operations at US Central Command: "Despite what...

1. Brooks and Renuart arrives for briefing 2. Cutaway media 3. SOUNDBITE (English) Air Force Major General Gene Renuart, director of operations at US Central Command: "Despite what you see in terms of localised euphoria in places in some...

HEADLINE: Raw Video: Afghan Air Force meets US astronauts CAPTION: Members of the Afghan Air Force got a chance to talk with legendary astronauts Neil Armstrong, Gene Cernan, and Jim Lovell at NATO training Mission Afghanistan...