1. Warm-Up (2/16) Answer the following questions in a complete sentence.
What is happening in the figure below?
An enzyme is producing two products by binding to a specific substrate.
A substrate is producing two products by binding to a specific enzyme.
An enzyme is producing two reactants by binding to a specific substrate.
A substrate is producing two reactants by binding to a specific enzyme.
Cross a pea plant that is heterozygous for purple flowers with a pea plant that is homozygous recessive for white flowers. What percentage of the offspring would have purple flowers?
Name
Date
Period

2. Dinosaur Tooth Size Selection
Generation 1

3. Dinosaur Tooth Size Selection
Generation 2

4. Dinosaur Tooth Size Selection
Generation 3

5. Dinosaur Tooth Size Selection
Generation 4

6. Dinosaur Tooth Size Selection
Generation
Small
Medium
Large
1: Parents 5 3 2
2: Children 8 6 7
3: Grandchildren 11 12 22
4: Great-grandchildren 25 35
Time (generations)
Number of individuals 1 2 3 4 5 10 15 20 25 30 35 40
small
medium
large

7. Dinosaur Tooth Size Selection
Time (generations) 1 2 3 4 5 10 15 20 25 30 35 40
small
medium
large
Generation
Small
Medium
Large
1: Parents 5 3 2
2: Children 8 6 7
3: Grandchildren 11 12 22
4: Great-grandchildren 25 35
Answer these questions in complete sentences in your journal. You do not have to write the question.
Which type of triceratops had the most babies? The _____________ triceratops had the most babies.
Which type of triceratops had a selective advantage? Why do you think this was? The _____________ triceratops had a selective advantage because…
After 100 more generations, what do you think the triceratops population will look like? After 100 more generations, I predict the triceratops population…

8. Evidence for Evolution
Fossil record
Shows change over time.
Deeper the fossil is, the older it is.

9. Evidence for Evolution
Homologous Structures
Shows how species are related.

10. Evidence for Evolution
Homologous Structures
Shows how species are related.
Seen in adults and in embryos.
Cat Embryo Human Embryo

11. Evidence for Evolution
Homologous Structures
Shows how species are related.
Seen in adults and in embryos.
Vestigial structures are homologous structures that are no longer used.
That’s a leg bone!

12. Evidence for Evolution
Homologous Structures
Shows how species are related.
Seen in adults and in embryos.
Vestigial structures are homologous structures that are no longer used.
Analogous structures are similar but come from a different ancestor.
Both have wings.
Insect
Mammal

13. Closure
Answer the following question in a complete sentence:
Name
Date
Period
What does a fossil buried very deep underground tell you about when it originated?
Scale from 1-10