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Evolution
| Question | Answer |
|---|---|
| What is evolution | the change in hereditary features of an organisms gradually over time |
| Explain what an adaptation is? | a characteristics that improves an individual’s ability to survive and reproduce in a particular environment. |
| Give two examples of an adaptation | Long neck, camouflage |
| What is natural selection | organisms with traits best suited are more likely to survive. These organisms will produce more offspring and therefore pass on their dominant their traits. |
| What does it mean to say “survival of the fittest” | The fittest are those whose adaptations match their environment.; their offspring inherit these traits and thus are more likely to survive |
| Explain Darwin’s contribution to science. | Theory of evolution is still accepted today. Realize that the most favorable/dominant trait will be passed on to the next generation. Natural selection & survival of the fittest. Great variation in organisms. |
| What is a variation? How does variation in a population happen? | The appearance of an inherited trait that makes an individual different from other members of the same species. |
| What evidence did Darwin collect? | Fossils, plants, and animals Studied finches and observed characteristics of organisms |
| What evidence supports the theory of evolution? | • Homologous animal parts • Natural selection • Fossils • Survival of the fittest • Adaptation/variation |
| If you are smarter, faster, healthier this is an example of: | Natural selection |
| Why does variation happen in populations? | Variation happens because organisms adapt to their environment over time, reproduce, and pass those traits onto their offspring. |
| If a dog breeder purposely selects the traits they want when mating dogs, this is known as: | Selective breeding or artificial selection |
| A bat and a human have similar bone structures in their hands and arms. This is known as | Homologous (same) structures |
| According to the theory of evolution, all organisms are believed to be evolved from where: | A COMMON ancestor |
| What do fossils tell us about organisms? | Fossils tell a story about what organisms looked like, what they ate, and their most common relative |
| A giraffe has a long neck so that it can reach the tops of trees. the giraffe has a more "suited" trait for its environment. What is likely to happen with the giraffe? | The giraffe is more likely to find a mate, reproduce, and pass this trait on to its offspring. |
| What does it mean to say that an organism's trait is best "matched" with its environment? | Organism's traits and varieties are more likely to allow them a higher chance for survival in their environment |
| What did the bird beak lab demonstrate? | Birds with the best "suited" traits are more likely to survive. Foods less eaten will become over populated. |
| What did the peppered moth lab simulate? | organisms that blend in with their environment are less likely to be eaten by predator, therefore is more likely to reproduce. |
Created by:
mlugerner
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