Lesson 1.4 - Traits and Reproduction

Open Ended

What have you learned so far about why some of the Darwin’s bark spiders have different traits for silk flexibility? Use the words form the word bank in your response.

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​Observe your first spider

Draw

Observing Proteins for Silk Flexibility in the Simulation

Launch the Traits and Reproduction Sim. Compare spiders with high, medium, and low silk flexibility.

In the first box, write your first spider's name.

In the middle box write their trait for silk flexibility (high, medium, or low).

In the third box, draw the structure (SHAPE) of the protein molecules in the cell.

Label the protein 1, 2, or 3.

​Observe your second spider

Draw

Observing Proteins for Silk Flexibility in the Simulation

Launch the Traits and Reproduction Sim. Compare spiders with high, medium, and low silk flexibility.

In the first box, write your second spider's name.

In the middle box write their trait for silk flexibility (high, medium, or low).

In the third box, draw the structure (SHAPE) of the protein molecules in the cell.

Label the protein 1, 2, or 3.

​Observe your third spider

Draw

Observing Proteins for Silk Flexibility in the Simulation

Launch the Traits and Reproduction Sim. Compare spiders with high, medium, and low silk flexibility.

In the first box, write your third spider's name.

In the middle box write their trait for silk flexibility (high, medium, or low).

In the third box, draw the structure (SHAPE) of the protein molecules in the cell.

Label the protein 1, 2, or 3.

​Lets look at the Protein to Trait Example together

Open Ended

Look at the Protein to Trait Example for silk flexibility. How do the differences in proteins lead to different traits for silk flexibility?

Poll

Select the feature you chose to observe:

• silk stickiness

• venom

• size

• body color

• stripe color

​Observe your first spider

Draw

Observing Proteins for Another Feature in the Simulation

Launch the Traits and Reproduction Sim.

With your partner, select a feature. Find three spiders with different traits for this feature.

In the first box, write your first spider's name.

In the middle box write their trait for the feature you chose.

In the third box, draw the structure (SHAPE) of the protein molecules in the cell.

Label the protein 1, 2, or 3.

​Observe your second spider

Draw

Observing Proteins for Another Feature in the Simulation

Launch the Traits and Reproduction Sim.

With your partner, select a feature. Find three spiders with different traits for this feature.

In the first box, write your second spider's name.

In the middle box write their trait for the feature you chose.

In the third box, draw the structure (SHAPE) of the protein molecules in the cell.

Label the protein 1, 2, or 3.

​Observe your third spider

Draw

Observing Proteins for Another Feature in the Simulation

Launch the Traits and Reproduction Sim.

With your partner, select a feature. Find three spiders with different traits for this feature.

In the first box, write your third spider's name.

In the middle box write their trait for the feature you chose.

In the third box, draw the structure (SHAPE) of the protein molecules in the cell.

Label the protein 1, 2, or 3.

​Look at the Protein to Trait Example for the feature you chose.

Open Ended

Look at the Protein to Trait Example for the feature you chose. How did the differences in proteins lead to different traits for this feature?

Draw

Draw the protein molecules each spider would have for silk flexibility inside their cells. Annotate the diagram to explain why the proteins lead to these traits.

Poll

Identify a feature for which each sister has a different trait.

• hair color

• eye color

• hair texture

• something else

Open Ended

What are the sister's traits for the feature you chose?

Open Ended

Why do these sisters have different traits? Use the words in the word bank in your response, describing what would determine these traits at the molecular scale.