Chapter Three Quiz Review….
Some primary vocabulary terms…
| Concept | Key ideas |
| hybrid | |
| punctuated equilibrium | “rapid change” in morphology of that actually occurs over a period of time but appears as a jump in evolutionary change. |
| speciation | formation of new species from pre-existing species
multiplication of species |
| hybrid | result of two separate species, may result in offspring that cannot reproduce |
| acquired characteristic | |
| overpopulation | |
| competition | |
| struggle for existance | |
| mutations | |
| species | group of interbreeding organisms which have been genetically separated |
| fixity of species | |
| fossil | imprint of a formerly living organism. May be intake bone structure. |
| natural selection | |
| artificial selection | |
| divergence | separation of species by isolating mechanisms, which causes species to genetically separate from each other. |
Comparing Lamarck to Darwin
| Lamarck | Darwin | |
| Source of Change | Brought about by environment | |
| Variablility and traits | Acquired characteristics are inherited based upon use and disuse of structures | |
| Role of Genes | If theory was correct then genes could be influenced by what the organism does | |
| Origin and source of variation | Not known | Not known |
| Source of insights | observation of morphological features | Observing
fossils diversity amongst species observing domestic species |
| Organisms are able to adapt to their environment when they inherit variations that have been developed by their parents through use and disuse | Six Development ideas
overpopulation competition struggle for existance species diversity observation of selected traits natural selection |
Darwin and the Galapagos Islands…
Focus your explaination of diversity amongs species by considering…
- What were orgin of species on the Island?
- How did isolation mechanisms cause species to change?
- consider all the options
- how is genetic material changed or kept appart?
- How would Darwin’s six principles be used to explain how a species could change?
- What observations where used to help Darwin create an argument for:
- Struggle for existence
- Competition
- Diversity within a species
- Traits that allowed a species to survive.
Rates of change
Gradual:
What case studies show a steady change in adaption?
Punctuated Equilibrium
What species showed a rapid change then equilibrium in an in class lab?
How is adaptive radiation different to Darwin and Lamarack’s ideas?
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