Transcript Do Now
Do Now: 1. What do you know about evolution? 2. Have you ever heard of Charles Darwin? REVIEW!!!! Before we look at evolution, lets review some key concepts… Can you tell me what traits are ? How about DNA? How about mutations? Word 1. Traits Definition Picture Characteristics organisms have due to their genetics Example: Brown hair, blue eyes, long fur, feathers Word Definition Picture Deoxyribonucleic acid, 2. DNA Molecule in the nucleus of our cells that tell our cells what to do You get half your DNA from you mom, half from you dad Word 3. Mutations Definition Picture Changes in DNA, could be harmful or helpful Think about this question: How have phones devices changed? Think about this question: How have personal musical devices changed? Word 1. Evolution Definition Picture change in the hereditary features of a species over time - due to mutations in their DNA Horse Evolution Whale Evolution Word 2. Charles Darwin Definition Theory of Natural Selection about evolution it is still accepted today Picture Darwin’s Observations Darwin went on an expedition to the Galapagos Islands and became the ship’s naturalist. (He studied plants and animals at every island they stopped.) Darwin collected many plants and animals and observed many new species in the Galapagos Islands. Species – group of organisms that can reproduce successfully Many different species of finches, but they lived so close? Word 3. Species Definition Group of organisms that can mate with one another to produce fertile offspring Picture Word 4. Adaptation Definition A characteristic that helps an organism survive and reproduce in its environment Examples: polar bear fur, bird wings Picture NOTE! Adaptations are caused by mutations in DNA. An organism cannot CHOOSE to have an adaptation and then pass it on to their children!! Darwin’s finches: adaptations: - bird beak shapes are examples of adaptations Questions 1. What is evolution? 2. Some insects look just like sticks. How could this be an advantage to the insects? 3. What are some adaptations that a shark has?