Scholars analyze Morgan's fruit fly lab to learn how genes are linked. The instructor shows that the data from a dihybrid cross was not what Morgan expected, and when re-crossed numerous times, the data did not change. Viewers see gene linkage because the data and visuals show that some genes are linked or found on the same chromosome. 

Concepts

genes, chromosomes, frequency

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Additional Tags

science

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Instructional Ideas

• The narrator references linked genes or gene linkage in a other videos within the series; show this video first to assist in teaching gene linkage, then show other videos

Classroom Considerations

• Assumes scholars can complete a Punnett square and all vocabulary tied to it
• Classroom needs a computer, access to the Internet, and a way to project the video
• Some repetition from other videos, so you might want to preview it to see if you can skip any parts
• Video 18 in a series of 31

Pros

• Includes a link to a fruit fly lab
• The narrator uses the linked lab in the video, which is a simulation, so teachers can see what the lab entails

Cons

• None

Common Core

RST.11-12.4