SCIN130 Lab 6: The Origin of Corn
V2 12.2020 Messina Felicetti
Page 1 of 5
SCIN 130 Lab 6: The Origin of Corn
General Instructions
Be sure to read the general instructions from the Lessons portion of
the class prior to completing this packet.
Remember, you are to upload this completed packet in the
Assignments link.
Background
Ten thousand years ago, corn didn’t exist anywhere in the world, and until
recently scientists argued vehemently about its origins. Today the crop is
consumed voraciously by us, by our livestock, and as a major part of
processed foods. So where did it come from? Popped Secret: The
Mysterious Origin of Corn tells the story of the genetic changes involved in
the transformation of a wild grass called teosinte into corn.
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SCIN130 Lab 6: The Origin of Corn
V2 12.2020 Messina Felicetti
Page 2 of 5
Specific Lab Instructions
Name:
Date:
Go to: The Mysterious Origin of Corn from HHMI Biointeractive
Watch the short film, and answer these questions as you progress.
1. What was the purpose of domestication in ancient civilizations?
2. What TWO features made Dr. Beadle believe that teosinte was an
ancestor of modern maize?
1. Teosinte and maize have nearly identical chromosomes.
2. They both could be crossbred to produce fertile offspring
3. Stop the film at the 6:55 and answer the following:
a. Answer the Let’s Review Questions. Embed a screenshot of
your answer to question 1 in this packet:
Question 1:
b. Why did botanists expect the wild relative of maize to look
similar to modern maize?
To produce desirable traits in plants over many generations, animals
were domesticated t produce more milk for humans to increase their
muscle mass and for humans to start living better when they lived in
larger settlements.
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