Term
| Darwins vogage on the Beagle led him to what observations? |
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Definition
| Species change as they adapt to their changing enviroments |
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Term
| Peter and Rosemary Grant noticed what about finches? |
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Definition
| The beak sizes were dependent on food supply |
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Term
| Observations of finches on the islands |
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Definition
| During dry years the survivors are the ones with the stronger beaks, therefore offspring have strong beaks |
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Term
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Definition
| Selective breeding of domesticated plants and animals to produce offspring with desired genetic traits |
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Term
| Biologists explain finding bones that appear similar to present organisms by saying _____ |
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Definition
| Homologous structures, common ancestor |
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Term
| Artificial selection's use and how farmers are successful |
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Definition
| The farmer can choose the most well built cattle to reproduce |
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Term
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Definition
| The most well-suited survive and pass on those genes so the offspring are strong too |
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Term
| Charles Lyell's thoughts about geological events on Earth and how it shaped Earth today |
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Definition
| Gradual processes shaped earth; erosion |
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Term
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Definition
| All alleles of all individuals that make upa population |
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Term
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Definition
| Contribution that an individual makes to the gene pool of the next generation compared to the contributions of other individuals |
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Term
| Homologous structures and examples |
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Definition
| Similar structures in species sharing a common ancestor. Although a whale does not have an arm/hand, it has the same parts in the flipper that humans do in the arm/hand |
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Term
| Vestigial structures and examples |
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Definition
| Type of homologous structure. The difference is that vestigial structures are important in one species but not that important in another. Look at whale example from homologous |
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Term
| Darwin saw what physical characteristics that support his hypotheis? |
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Definition
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Term
| Malthus addressed what about populations, food and resources? |
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Definition
| Human suffering is due to the populations potential to grow |
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Term
| What do antibiotics do to bacteria? |
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Definition
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Term
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Definition
| Change in the gene pool of a population due to chance |
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Term
| Two of Darwun's main pounts of natural selection |
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Definition
| All species tend to produce excessive amounts of offspring, variation |
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Term
| Populations share the same type of ____ |
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Definition
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Term
| Darwin explained that survival of organisms due to natural selection is due to _____ |
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Definition
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Term
| Populations that are seperated by phsical barriers are called _____ |
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Definition
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Term
| Species are sperated due to _____ |
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Definition
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Term
| Fossils are mostly formed in _____ rock |
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Definition
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Term
| Examples of fossils include _____ |
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Definition
| Skulls of animals, bones, plants |
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Term
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Definition
| Number of years it takes for 50 percent of the original sample to decay |
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Term
| A single species that has evolved into several different forms that live in different ways is called _____ |
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Definition
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Term
| Earth's most recent era is _____ |
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Definition
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Definition
| Process in which unrelated species from similar enviroments have adaptations that seem very similar |
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Term
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Definition
| Evolution from a common ancestor of many species adapted to diverse enviroments |
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Term
| What were the most dominant land animals during the Jurassic and Cretaceious period? |
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Definition
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Term
| A cladogram shows us _____ |
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Definition
| Phylogentic tree constructed from a series of two-way branch poins, suggesting ancestral relationships among species |
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