Understanding Lactase Persistence and Milk Consumption

The video explores the concept of being a 'mutant' with the ability to digest milk, a trait not common to all humans. It delves into the history of milk consumption, the role of lactose and lactase, and the genetic mutation that allows some adults to digest lactose. The video also discusses the global variability in lactase persistence and its evolutionary advantages.

What is the 'mutant' ability discussed in the introduction?

• The ability to read minds

• The ability to digest milk

• The ability to teleport

• The ability to fly

What is the main reason lactose intolerance occurs?

• Lack of vitamin D

• Excessive protein

• Excessive calcium

• Lack of lactase enzyme

What method did Neolithic herders use to reduce lactose in milk?

• Boiling

• Freezing

• Fermenting

• Diluting

What is the genetic trait that allows adults to digest lactose?

• Protein synthesis trait

• Calcium absorption trait

• Vitamin D trait

• Lactase persistence trait

Where did the lactase persistence trait likely first appear?

• North America

• South Asia

• Middle East

• Central Europe

Why might lactase persistence have been advantageous in northern Europe?

• High population density

• Colder climate and food scarcity

• Abundant sunlight

• Warmer climate

What percentage of adults in Britain and Scandinavia can digest milk?

• 10%

• 40%

• 70%

• 90%

In which regions is lactase persistence less than 10%?

• North America

• South America

• Africa and Asia

• Australia

What is the main nutritional advantage of milk in regions with little winter sun?

• High vitamin D content

• High potassium content

• High protein content

• High calcium content

What is the global percentage of people who can digest lactose into adulthood?

• 30%

• 10%

• 70%

• 50%