Name _____________________________________ Period ____
Where do genes come from? - Carl Zimmer
http://ed.ted.com/lessons/where-do-genes-come-from-carl-zimmer
1. How did snake venom evolve?
2. Put the following statements from the video in the correct sequence.
a. The protein started to be made in the mouth not in the pancreas
b. Gene for killing bacteria duplicated, the new copy mutated
c. Protein helped snake catch more prey and became favored
d. Snake makes a protein to kill bacteria in pancreas
e. The mutation changed signal in the gene about where it should make its protein
3. Mutations can be cause a new, useless, or harmful protein to change shape and become
useful. What may happen to the organism as a result?
4. Explain how mutations have created more/different genes on Earth today than in the
past. Be sure to include all of the necessary steps!
5. What encodes the molecules that make up your body?
a. Enzymes
b. Mutations
c. Genes
d. DNA
6. ________ genes are on Earth today as compared to millions of years ago.
a. More
b. Less
c. The same number of
d. We cannot tell how many
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7.
a. Enzymes
b. Mistakes
c. Proteins
d. Cell divisions
Many of the new genes produced are born from:
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8. Mutations can have a bigger effect on new copies of genes by having the protein:
a. Do a different job altogether
b. Made in a different organ
c. Formed at a different time of life
d. All of the above