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CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 7:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 6:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 5:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 4:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 3:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 2:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: TIME REMAINING: 1:00 MINUTES 1. What is natural selection? What are the four ingredients for evolution? CATALYST Silently and on your own, complete the task below When you are finished, put your pencil down and look up. Remain silent to allow others to finish. Answer the following questions: 2. 3. What can be concluded about the dates of 2 fossil layers? A. the fossil that is on top is the oldest B. the fossil that is on top is the newest C. all fossil layers are the same age D. it cannot be concluded which fossils are oldest TIME REMAINING: 2:00 MINUTES Oxygen was not present in the early atmosphere. Which of the following describes the first organisms that lived in this environment? A. homologous B. vestigial C. anaerobic D. aerobic CATALYST Silently and on your own, complete the task below When you are finished, put your pencil down and look up. Remain silent to allow others to finish. Answer the following questions: 2. 3. What can be concluded about the dates of 2 fossil layers? A. the fossil that is on top is the oldest B. the fossil that is on top is the newest C. all fossil layers are the same age D. it cannot be concluded which fossils are oldest TIME REMAINING: 1:00 MINUTES Oxygen was not present in the early atmosphere. Which of the following describes the first organisms that lived in this environment? A. homologous B. vestigial C. anaerobic D. aerobic CATALYST e CATALYST is to be done independently and silently. swer the following questions in your notebook: 1. What is natural selection? What are the four ingredients for evolution? CATALYST Silently and on your own, complete the task below When you are finished, put your pencil down and look up. Remain silent to allow others to finish. Answer the following questions: 2. What can be concluded about the dates of 2 fossil layers? A. the fossil that is on top is the oldest B. the fossil that is on top is the newest C. all fossil layers are the same age D. it cannot be concluded which fossils are oldest 3. Oxygen was not present in the early atmosphere. Which of the following describes the first organisms that lived in this environment? A. homologous B. vestigial C. anaerobic Week Agenda • • Tuesday • Vocabulary Quiz I Friday • • • Vocabulary Quiz II Formative I Recovery (Genetics Summative) • • Tracking Recovery Assessment Evolution: Change Over Time In order for evolution to happen, you need…. V S I T Variation Selection Inheritance Time Stands for… Variation S I T Means… Difference between individuals Stands for… V Selection I T Means… Individuals with “good” traits will survive and reproduce more Stands for… V S Inheritance T Means… Genes are passed from parent to child Stands for… V S I Time Means… MANY generations What does selection mean? Vocabulary Adaptation Fitness an inherited trait that increases an organisms chance of survival and reproduction the ability of an organism to survive and reproduce in its environment Variation Differences among individuals When there is variation, some individuals will have better fitness (good genes) Natural Selection • Natural Selection: Organisms best suited to their environment as a result of good genes survive and reproduce. • Natural Selection = reproduction (and survival) of the fittest Natural Selection • Natural Selection is WHY Darwin’s finches matched their environment In an environment with BIG SEEDS… Big beak = adaptation Survives longer Reproduces more EVOLUTION BY NATURAL Passes SELECTION on more genes Big beaks become more common This process is an example of NATURAL SELECTION! In an environment with SMALL SEEDS… Small beak = adaptation Survives longer Reproduces more EVOLUTION BY NATURAL Passes SELECTION on more genes Small beaks become more common This process is an example of NATURAL SELECTION! Natural Selection Needs... V S I T Variation Selection Inheritance Time In an environment with PREDATORS Camouflag e = adaptation Survives longer Reproduces more EVOLUTION BY NATURAL Passes SELECTION on more genes Camouflage becomes more common This process is an example of NATURAL SELECTION! Adaptations Adaptation An inherited trait that increases an organism’s chance of survival and reproduction Organisms adapt to their environment Outline Adaptations in animals Mimicry Camouflage Adaptations in plants Coevolution Mimicry •Mimicry: an adaptation that allows one species to look like a more dangerous species •Predators are less likely to attack a mimic Mimicry Coral Snake vs Scarlet King Snake Camouflage •Camouflage: an adaptation that allows a species to blend in with its surroundings so predators cannot see it •Predators are less likely to find a camouflaged animal Camouflage Camouflage Cephalopods http://blog.ted.com/2008/01/11/david_gallo/ Plant Adaptations Plant Structure Leaves adapt to a plants environment Example 1: plants that live on the rainforest floor (so get little light) have broad, flat leaves to capture as much light as possible Plant Adaptations Plant Structure Leaves adapt to a plants environment Example 2: cactus that live in the desert (so get little water) have spines for leaves to keep from losing water Plant Adaptations Plant Feeding Carnivorous plants have adaptations that let them eat animals Example: pitcher plants Coevolution •Coevolution: species that rely on each other adapt to each other Coevolution • Example: the cardinal flower and the hummingbird • The tube in the cardinal flower is the same length as the beak of they hummingbird. They are adapted to each other! Exit Ticket • What is natural selection? • What is an adaptation? • What is the difference between camouflage and mimicry? • Provide an example of of each (camouflage and mimicry). • What is coevolution? Provide and example of coevolution.