TR 1.4: Observing Proteins and Variation
Objective: KWBAT create models to explain how the structure of protein molecules cause differences in traits.
Word bank:
Molecule
Protein
Structure
Trait
Look at the Family Tree above.
Use what you learned from the article you read yesterday. Specifically, Question 8 from TR 1.3!
Why do some of Darwin’s bark spiders have different traits for silk flexibility?
Do you think that the offspring got their trait for silk flexibility from one parent?
Compare the protein molecules in each of the spider’s cells.
Record your observations in the data table.
Repeat the process for part 1; this time, however, choose a different feature from the top menu (instead of silk flexibility).
(For protein molecular structure, how many types of proteins do you see and what is their structure?)
You are now ready to complete your TR Ch 1 Task.
You can find your chapter task in Google Classroom.

Each protein molecule connects to more protein molecules to form a silk strand.
Predict which type of protein molecule you think will form the most flexible strand. Explain your answer.
Sentence Starter: I predict that protein ___ will form the most flexible strand because…