Use data to support your answer. The data on lactase persistence provides strong support that humans are evolving. In the last 10,000 years, different mutations that enable human adults to digest milk became prevalent in some human populations.
- How is lactase persistence an example of human evolution?
- How the lactase persistence trait is a convincing example of gene-culture coevolution?
- What is the significance of lactase persistence?
- What was an important development in human culture that drove the evolution of lactase persistence?
- How is lactase persistence evidence for natural selection?
- Were the ancestors of humans lactose tolerant or intolerant as adults?
- Why is lactase persistence more prevalent in certain regions?
- How is lactase persistence an example of human evolution quizlet?
- What is the difference between lactose tolerance and lactose persistence?
How is lactase persistence an example of human evolution?
Evolutionary history. According to the gene-culture coevolution hypothesis, the ability to digest lactose into adulthood (lactase persistence) became advantageous to humans after the invention of animal husbandry and the domestication of animal species that could provide a consistent source of milk.
How the lactase persistence trait is a convincing example of gene-culture coevolution?
A classic example of gene-culture coevolution is lactase persistence (LP) in human adults. Milk contains a sugar named lactose, which must be digested by the enzyme lactase before it can be absorbed in the intestine.
What is the significance of lactase persistence?
Lactase persistence—the ability of adults to digest the lactose in milk—varies widely in frequency across human populations. This trait represents an adaptation to the domestication of dairying animals and the subsequent consumption of their milk.
What was an important development in human culture that drove the evolution of lactase persistence?
Scientists hypothesize that the use of milk in pastoralist cultures drove evolution of lactase persistence.
How is lactase persistence evidence for natural selection?
The lactase-persistence mutation would become common if it provided a survival and reproductive advantage in a particular environment. For example, in a population with domesticated cows, where milk is available, the ability to drink milk might have been advantageous in periods of drought or when food was limited.
Were the ancestors of humans lactose tolerant or intolerant as adults?
Anyone who enjoys ice cream can thank evolution. Just 10,000 years ago, no one past infancy could digest milk sugar, called lactose. Babies always made lactase, the enzyme that breaks down this sugar, but after weaning lactase production would stop.
Why is lactase persistence more prevalent in certain regions?
The lactase persistence trait is more common in populations that practice cattle herding and dairy farming, and it is related to genetic selection of individuals with the ability to digest lactose.
How is lactase persistence an example of human evolution quizlet?
How is lactase persistence an example of human evolution? This is an example of human evolution because as humans began to drink/eat more dairy from the cows, the enzyme lactase became more prevalent in the body's system to help break down the lactose allowing humans to become lactase persisted.
What is the difference between lactose tolerance and lactose persistence?
Lactose intolerance is a recessive trait, whereas lactase persistence is dominant. The lactase persistence locus is between intron 13 and exon 17 of the minichromosome maintenance complex component 6 gene (MCM6) located upstream of the lactase gene (LCT).