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. |