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Interactive Assessment for Got Lactase? The Co-evolution of Genes and Culture

Start Video
Screen shot of the quiz

Topic

  • Genetics
  • Gene Expression & Regulation
  • Anatomy & Physiology
  • Metabolism & Nutrition
  • Evolution
  • Natural Selection
  • Human Evolution

Resource Type

  • Interactive Media
  • Interactive Videos

Level

High School — GeneralHigh School — AP/IBCollege
Saved By
45 Users
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Description

Several questions are embedded within the short film The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture, which explores the genetics of lactase persistence and evolution of the trait in some human populations.

Babies can easily digest milk, the food especially provided for them by their mothers. Later in life, most of us lose this ability because we stop producing lactase, the enzyme that helps us digest the sugar in milk. But about one-third of adults worldwide continue to produce the enzyme, a phenomenon known as lactase persistence. This film explores the genetics behind lactase persistence and discusses research that traces the origin of this trait to less than 10,000 years ago. The origin of lactase persistence coincides with a cultural shift in human populations who began to use the milk of other mammals as food. Combining genetics, chemistry, and anthropology, this story provides a compelling example of the co-evolution of human gene regulation and human culture.

This version of the film with embedded questions contains automatic pause points, during which students answer questions about the film to assess their understanding of the concepts presented. After answering all the questions, students can view and print their answers.

Student Learning Targets

  • Explain the genetic and evolutionary origin of lactase persistence.

Estimated Time

Within one 50-minute class period.

Key Terms

adaptation, gene expression, lactase persistence, lactose, lactose intolerance, milk, pastoralist

Primary Literature

Callaway, Ewen. “Pottery shards put a date on Africa’s dairying.” Nature, 20 June 2012. https://doi.org/10.1038/nature.2012.10863.

Hollox, Edward. “Evolutionary genetics: Genetics of lactase persistence – fresh lessons in the history of milk drinking.” European Journal of Human Genetics 13, 3 (2005): 267–269. https://doi.org/10.1038/sj.ejhg.5201297.

Terms of Use

Please see the Terms of Use for information on how this resource can be used.

Accessibility Level (WCAG compliance)

Interactive media meets criteria.

Version History

Date Published 03.28.16
Date Updated 03.28.16

NGSS (2013)

HS-LS1.A, HS-LS3.A, HS-LS3.B, HS-LS4.B, HS-LS4.C; SEP6

AP Biology (2019)

EVO-1.D, EVO-1.E, EVO-1.J, EVO-1.O, EVO-3.A, IST-2.A, IST-2.E, IST-4.A, IST-4.B, SYI-3.D; SP1, SP4

IB Biology (2016)

2.5, 3.1, 4.1, 5.4, 6.1, D.2

AP Environmental Science (2020)

Topic(s): 2.6, 3.8, 5.3
Learning Objectives & Practices: ERT-2.H, EIN-1.C, EIN-2.C, SP5

Common Core (2010)

ELA.RST.9-12.4

Vision and Change (2009)

CC1, CC5; DP1

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Activity for Got Lactase? The Co-evolution of Genes and Culture
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The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture
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Lactase Persistence: Evidence for Selection
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Natural Selection for Lactose Tolerance
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Milk: How Sweet Is It?
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Pedigrees and the Inheritance of Lactose Intolerance
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Lactose Intolerance: Fact or Fiction
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Blood Glucose Data Analysis

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Activity for Got Lactase? The Co-evolution of Genes and Culture
Photo of a cow drinking milk from a bottle
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Photo of a cat being given a bowl of milk
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Lactose Intolerance: Fact or Fiction
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Image from the interactive
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Recent Adaptations in Humans
Portion of the main image
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Spread of a Lactase-Persistence Allele
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