WARM-UP Use your NOTES from yesterday to answer the 7 questions on your warm- up. Glue to p. 82 in your notebook (leave some space below) –Glue sticks on front lab bench

Yesterday’s CFU Glue under the warm-up on p. 82

EVOLUTION CHARLES DARWIN & NATURAL SELECTION

Who was CHARLES DARWIN? Father of Evolution A naturalist 1831 – traveled for 5 years on the HMS Beagle touring various the Galapagos islands observing finches (birds), turtles, and many other organisms – wrote a book called On the Origin fo Species that outlined the process of natural selection Developed the idea that a species will evolve (Change) due to natural selection p.83

DE video: Natural Selection

Darwin’s FINCHES Darwin observed various species of finches with different beak adaptations specific to the type of food available on each island Prime example of adaptive radiation p.83

What is ADAPTIVE RADIATION? When one species evolves into many different species in order to adapt to the environment This is also called divergent evolution (a type of SPECIATION). p.83

What is SPECIATION The development of new species from an existing species. Takes place over many generations Very slow process p.83

What is a SPECIES A group of organisms of the same kind that are able to mate and produce viable (fertile) offspring capable of reproducing themselves. p.83

What is EVOLUTION? CHANGE in a POPULATION (species) over TIME p.83

What is needed for Evolution to occur? Genetic variation (differences) – caused by mutations (and sexual reproduction) Overproduction of offspring Competition for resources Adaptations organisms with traits best suited to the environment (adaptations) will survive and reproduce. Environmental selective pressures (a changing environment can drive evolution of a species and speciatin) p.83

Genetic Variation

What is FITNESS? The ability of an organism to survive reproduce, and pass on their genes. p.83

HOW does evolution occur? Natural selection Geographic isolation Reproductive isolation p.83

What was Darwin’s theory of NATURAL SELECTION? Natural selection is the PROCESS by which organisms best suited for survival in their environment will have better reproductive success, and pass on their genes (adaptations) to the next generation Called “SURVIVAL of the FITTEST” p.83

Natural Selection

Let’s Explore the Case of the Peppered Moth! LAB ACTIVITY! You will TURN THIS IN FOR A GRADE

Warm-up: Close Reading Read about Charles Darwin and Answer the Questions (1-13) This is a CW grade! It will be checked for completion at 7:35 We will go over correct answers.

Natural Selection Read the “Deer & Cactus” Scenarios and answer the questions. GENETIC VARIATION: members in a population have differences (variations) in traits OVERPRODUCTION: a population generally produces more offspring than can survive in the environment COMPETITION (struggle to survive): because of overproduction, organisms must compete (struggle for survival) between one another for resources FITNESS: individuals with favorable variations (adaptations) (traits) are better able to survive and reproduce

Glue p. 84

Lab Time! How do plant species change over time? 1.Read carefully! 2.You will need scissors and glue! 3.This will be FORMAL LAB GRADE.

Sec Darwin Presents His Case Read pp and answer the questions. Turn it in.