Name:______________________________________________ Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. Introduction: Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. The economic changes known as the industrial revolution began in the middle of the eighteenth century. Instructions: Click the link below to read more information on Kettlewell's study of moths. After 5 minutes record the % of dark moths and light moths - you will need this information later. Peppered Moth Simulation at peppermoths.weebly.com Data and Analysis Read the background information and answer the questions as you go. Life Cycle of the Peppered Moth 1. 2. 3. 4. 5. 6. Impact of Pollution 7. 8. 9. 10. 11. 12. Kettlewell's Experiments 13. 14. 15. 16. 17. 18. 19. 20. Birdseye View 21. Final Analysis 22. 23. 24.
• UNIT 2 - Biological Unity & Diversity
DNA . GeneticsIn the 150 years since Mendel's first experiments, geneticists have discovered that genetic traits usually don't follow simple inheritance patterns. Some traits, like human eye color and stature, are produced by the interplay of many sets of genes; these are known as "polygenic traits." Other traits show a phenomenon called intermediate expression, in which a heterozygous genotype will produce a phenotype that's different from homozygous dominant genotypes. In addition, some genes have more than two different versions. Now that you know a little about blood types, let's learn about the genes that code for them.The Perfect Beak NGSSTo begin the lesson, have students complete the anticipation guide about natural selection, in order to gauge the students’ prior knowledge. Review the guide together as a class, making note of misconceptions that students hold; you will want to tweak this lesson in order to address the specific needs of your students. Let students know that we will be exploring these concepts in a few simulation activities. Ask students if we all have the same color hair? Discuss with students whether the trait to roll our tongue or the trait for our attached or detached earlobes affects our survival. Photo taken from Preparation for Activity Part 1: Activity Part 1: Introduction & Preparation: Tell students that they will participate in a simulation that will help answer the question: How might a genetic trait affect an organism’s chance of survival? Activity & Recording Data: Interpreting & Analyzing Data: Activity Part 2: Writing Activity
The driving force for molecular evolution of translationGenetic DisordersBetterLesson - Natural Selection - Survival of the FittestIn this section of lesson students read an article on Natural Selection from cK-12. 1. Inherited vs Acquired Traits 2. To check for understanding, students answer the following questions at end of video: What's the difference between an acquired and inherited trait? In addition to reading, I show students Evolution in 1 Minute video that does a good job at visually summarizing the process of natural selection. Link It's important to point out to student that genetic variation, along with environment conditions, produces the conditions for natural selection. In addition, it's crucial to communicate the fact that natural selection is not an active process, meaning nature is not intentionally selecting one set of individuals over others.
Extraordinary AdaptationAnimated Blood TypesSince Rh negative people may produce anti-Rh antibodies, Rh positive blood should not be given to an Rh negative recipient. Based upon the above table, Rh positive recipients can theoretically receive positive or negative blood, and Rh negative donors can theoretically give to Rh positive and Rh negative recipients. Therefore, the "universal donor" is O Negative, while the "universal recipient" is AB Positive. Anti-Rh (immune-type) antibodies can readily pass through the placental capillary membranes. A serious potential problem called maternal-fetal blood incompatibility or Rh Disease could occur with a pregnant Rh negative mother who carries an Rh positive fetus. Leakage of fetal red blood cells (RBCs) into the mother's system through minute lesions in the placenta may cause her to produce anti-Rh antibodies. There are also reported cases of maternal-fetal blood incompatibility with the A-B-O blood groups; however, the Rh factor appears to be much more common.
BetterLesson - Adaptation and Evolution of Populations: The Case of the Peppered MothIn this section of lesson students elaborate on what they have learned through the Peppered Moth simulation by reading a passage from Readworks. The passage, titled Naturally Selected to Survive, can be found for free by going onto that site, and searching for the title. The lexile level is 1090L, and there are a number of online resources that can be used to modify printed material to different reading levels. (Google app tldr (too long didn't read), Rewordify) The passage discusses in detail the environmental changes caused in England by the Industrial Revolution, and changes to the moth population as observed by scientists over the next 100 years. In having your students read this article, consider their academic language level which is different than their social language level. Once students have read the passage, they answer a series of Text Dependent questions that assesses their comprehension of text.