4/13 Daily Catalyst Pg. 46 Comparative Embryology 1. What piece of evidence influence Darwin’s Theory of Evolution the most? 2. What type of classification organizes organisms by physical characteristics? What is a downside to this type of classification? 3. Compare the lesson on evolution of bacteria to the phrase survival of the fittest. 4. Two organisms share the trait of sharp, pronged teeth for ripping meat off a carcass. Is this an example of homologous, analogous, or vestigial?

4/13 Class Business Pg. 46 Comparative Embryology Quiz #12 on Wednesday Evidence for Darwin’s Theory Evolution test on Thursday, April 16th Study guide due test day Review day on Wednesday, April 15th Quiz #12 on Review day Human body begins on Friday, April 17th Quiz Make up: Wyatt, Ridel, Francisco and Avery

Data Assessment Average Top Scorers Quiz #10 Fossils 1.90 Chris, Eva, Travis, Amani, Alfred, Jonathan, ET #11 Comparative anatomy 2.61 Stephanie, Stephen, David, Chase, Ridel, Hefer, Fabien, Alfred, Eduardo, Zaven, Kayla, Eliud Quiz #11 Darwin’s Evidence 1.36 Eva (4.1) and Daniel (4)

4/13 Class Business Pg. 46 Comparative Embryology Daily Catalyst Class Business Review Comparative Embryology notes Comparative Embryology project Exit Ticket #12

Review Time!

Which layers are the same age?

What type of structure is shown below? Homologous

Which layer is older, A or D?

What type of structure is shown below? Vestigial

In your notes Draw a cladogram depicting the relationship between the species, humans with the following specie information in the chart. Species Percent DNA similarity Chimpanzee 99.6% Dog 91.3% Fruit Fly 74.2% Roundworm 50.8%

Share the LEAST amount of DNA so furthest apart! CHIMP HUMANS DOG FRUIT FLY ROUND WORM Share the LEAST amount of DNA so furthest apart!

Note time-page 46 An animal consists of many thousands, millions, even trillions of cells organized into complex tissues and organs. The transformation from a zygote to this multicellular state is truly phenomenal. Order and precision are required at every step, and both are clearly displayed in the first two major phases of embryonic development”: cleavage and gastrulation.

Essential Vocab Key Point #1: Cleavage Rapid succession of cell divisions that produces a ball of cells (blastula) Zygote  Embryo Cell does not bigger, just divide into more, smaller cells

Key Point #2: Importance of Cleavage: Creates a multi-cellular embryo Organizing process Beginning of specialized cells For example: Heart cells vs. eye cells

Key Point #3: Gastrulation: Takes blastula  gastrula Gastrula- 3 layered cell Adds more cells to the embryo Sorts cells into distinct layers

Key Point #4: Importance of gastrulation: The 3 layers begin to differentiate into tissues and organs

Key Point #5: Evolutionary Significance: Embryonic development is controlled by similar genes in across diverse animal groups Limbs develop in a similar way Example: human arm vs chicken wing

Comparative Embryology Project Directions: Read the pre-reading and answer the questions on notebook page 46. Time: 15 minutes Noise: 0 (SILENT)

Comparative Embryology Project Directions: Complete and glue in the comparative chart on notebook page 46. Use the hints to determine where the embryos belong. Raise your hand with questions. This project is worth a test grade and will be checked at the end of class. Time: until 10:45 Noise: 1 (with partner)

Name: _________ Date: 4/13 Period: 1 Score: ____/4 Exit Ticket #12 DNA Name: _________ Date: 4/13 Period: 1 Score: ____/4 1. What is DNA? 2. If two organisms have little to no DNA similarities, what can we say about their relation? 3. Why are homologous structures evidence for evolution? 4. Use the diagram to explain the similarity between Human and Zebras.

Exit Ticket #12 1. What is DNA? All of your genetic information (traits) 2. If two organisms have little to no DNA similarities, what can we say about their relation? They are not closely related to one another 3. Why are homologous structures evidence for evolution? The structures are similar because they share DNA from a common ancestor and used for a different purpose due to a different environment. 4. Use the diagram to explain the similarity between Human and Zebras. They are not related to one another and only have one amino acid in common.