| A | B |
|---|
| evolution | the change in a species over time |
| more specific evolution definition | change in inherited characteristics in a species over the course of generations |
| Why are mutations the raw materials of evolution | they make it possible for new traits to arise, new traits may offer survival advantage, and may increase in frequency over time as these traits are passed from parent to offspring |
| In order for a species to change over time, | changes must occur in that species' DNA to Create new traits in offspring |
| What changes DNA? | crossing over during meiosis, recombination during fertilization, and mutations |
| If this DNA change creates a new trait in an offspring that is advantageous for survival, | that offspring will have a much greater likelihood of reproducing and passing it's traits on to future generations |
| Example of evolution | Bacterial resistance to antibiotics |
| Lamarack's Theory of Acquired Characteristics | An organism can pass on characteristics that it acquired during its lifetime to its offspring |
| 1 part of Lamarack's Theory | Use and Disuse |
| Definition of Use and disuse | individuals lose characteristics they do not require and develop characteristics that are useful |
| 2nd part of Lamarack's Theory | Inheritance of acquired traits |
| Definition of acquired traits | individuals inherit the traits of their ancestors |
| Example of Lamarackism | Giraffes stretch their necks to reach leaves high in the trees.Their necks strengthen and gradually get longer. Offspring inherit long necks |
| Lamarck' nationality | French |
| Darwin's nationality | English |
| 1831 | when Darwin began his 5 year voyage throughout the world |
| early 1800's | when Lamarack proposed his theory |
| 1859 | Darwin published his famous work |
| On the Origin of Species | Darwin work that proposed the theory of evolution |
