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Examining the Physiology Behind the Symptoms of Lactose Intolerance

By Melissa Haswell

Davenport University

This is a set of extension questions for the HHMI short film The Making of the Fittest: Got Lactase? The Co-evolution of Genes Video Activity.

Listed in Teaching Materials | resource by group HHMI BioInteractive FMN (2016)

Version 1.0 - published on 28 Aug 2020 doi:10.25334/FKK8-WP23 - cite this

Licensed under Creative Commons CC0 1.0 Universal


This is a series of extension questions to use in conjunction with the published HHMI activity which examines the ability of humans to digest lactose (see accompanying link).  

Using lactase persistence as the model,, these question in conjunction with the HHMI activity do the following:

1.Introduce students to the digestive system & enzymatic digestion.

2.Apply previously learned knowledge of acid-base balance via blood and respiratory system to digestive system processes.

3.Introduce students to movement of water between body compartments.

4.Reinforce genetic inheritance and natural selection concepts.


Cite this work

Researchers should cite this work as follows:


A detailed description of how to use these questions is explained via the accompanying website link.

HHMI BioInteractive FMN (2016)

HHMI BioInteractive FMN (2016) group image

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