Milk and the Mutants That Love It

The video explores the concept of lactose tolerance as a 'mutant' superpower, explaining how most of the world's population is lactose intolerant due to the natural decline of lactase production after childhood. It delves into the history of milk consumption, highlighting how early humans fermented milk to reduce lactose content. A genetic mutation, known as the lactase persistence trait, allowed some populations to continue digesting lactose into adulthood, particularly in Europe. This mutation provided evolutionary advantages in certain climates, leading to varying levels of lactose tolerance worldwide.

What enzyme is responsible for digesting lactose in milk?

• Amylase

• Lactase

• Protease

• Lipase

What was one of the early methods used by Neolithic herders to reduce lactose in milk?

• Mixing it with water

• Fermenting it into cheese and yogurt

• Freezing it

• Boiling the milk

Where did the lactase persistence trait first appear according to scientists?

• East Asia

• Middle East

• North America

• Central Europe

Why might the lactase persistence trait have been advantageous in northern climates?

• Dairy products store well in colder climates

• Lactose is less prevalent in northern milk

• Milk is sweeter in colder climates

• Cows produce more milk in the north

In which region is lactase persistence least common?

• Central Europe

• Africa and Asia

• Mediterranean

• Scandinavia