Milk, and the Mutants That Love It

The video explores the concept of being a 'mutant' with the ability to digest lactose, a trait not common in most of the world's population. It delves into the history of milk consumption, the genetic mutation that allows some adults to produce lactase, and the global distribution of this trait. The video highlights how this mutation spread through Europe and its advantages in certain climates, while also noting the prevalence of lactose intolerance in various regions.

What is the primary reason most adults worldwide cannot digest lactose?

• Lactose is inherently indigestible.

• Lactase is only produced in certain climates.

• They stop producing lactase after childhood.

• They never produced lactase.

How did early humans initially manage to consume milk despite lactose intolerance?

• By diluting it with water.

• By boiling the milk.

• By fermenting it into cheese and yogurt.

• By mixing it with other foods.

What genetic mutation allowed some humans to digest lactose into adulthood?

• The LP allele.

• The lactose intolerance gene.

• The vitamin D gene.

• The dairy digestion gene.

Why did the lactase persistence trait spread more successfully in northern Europe?

• Because of the warmer climate.

• Due to the abundance of sunlight.

• Because dairy products stored well in colder climates.

• Due to the lack of other food sources.

In which region is lactase persistence least common?

• Scandinavia

• The Mediterranean

• Africa and Asia

• Central Europe