Biology 11 (16-17) Lesson 13 Date Oct 20th 2016
|
Last lessons |
1) story of Evolution Timeline 2) Darwin verse Lamarck 3) Problems with Linneaus, Taxonomy and DNA
|
Eval |
| Today’s Objectives | 1) Darwin’s Finches
2) The rate of change: punctuated or gradual 3) Introduction to Taxonomy
|
|
| Topic
Number One |
So here is the six mark question: How did the diversity of finches on the Galopagos Islands occur according to Darwin’s mechanism for change.
Key points. 1) A population of finches arrived to the Islands from mainland south America, perhaps Ecuador. 2) On the initial island there was: · Plenty of food · Niches to set up territories · No natural predators 3) As the species started to grow, there began a competition of food and space. 4) Some species born did not have the correct beak to get food and they migrated to another island. 5) On the new island, those species that survived were those species that had the right beak adaption to get food. ( See definition for adaptive radiation) 6) Each Island has its own unique climate and habitat, the species that had the best beak to get food on that island became the dominant species on that island.
Wallace discovered the same pattern with islands https://www.wired.com/2012/08/island-evolution-more-species/
Wallace web page Wallace paper to Linneaus society http://wallacefund.info/content/1858-darwin-wallace-paper
|
|
| Topic
Number Two |
Rates of Change: Gradual verses Punctuated Equilibrium
http://evolution.about.com/od/macroevolution/a/Gradualism-Vs-Punctuated-Equilibrium.htm
What is adaptive radiation and how can it help explain different rates of change? Darwin’s Dilemma http://evolution.about.com/od/Darwin/fl/Darwins-Dilemma.htm
Video to compare · https://www.youtube.com/watch?v=SP553wXgXJc · https://www.youtube.com/watch?v=qWUqQyVa5ts · https://www.youtube.com/watch?v=4eEEWwwezlw
|
|
| Topic
Number Three |
Why the confusion with Taxonomy and Evolution
a) Taxonomy came first and did not consider DNA b) Evolutionary theories did not know about DNA c) Gradual and Punctuated Equilibrium
What is taxonomy and Linneaus’s plan · https://www.youtube.com/watch?v=aiC_Z8Za7wc · https://www.youtube.com/watch?v=KPtAuojPQVQ · https://www.youtube.com/watch?v=F38BmgPcZ_I
What is the difference between a system using kingdoms verses Domains?
|
|
| Text book Ref
|
Chapter 3 Darwin’s theory of evolution, rate of change and adaptive radiation
Chapter 6: Traits and allele frequency Chapter 7: Taxonomy
|
|
| Online | Misconceptions about evolution http://evolution.berkeley.edu/evolibrary/misconceptions_teacherfaq.php
Practice Evolution quizzes · http://anthro.palomar.edu/practice/evoquiz2.htm · http://highered.mheducation.com/sites/0073031208/student_view0/chapter20/multiple_choice.html
|
|
| Take Home Message | To simplify a problem, make it into small pieces. Paraphrase of Einstein.
|
No comments