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Unit 4 Bio Evolution
Boise Curriculum regarding species and how gene frequencies change over time
| Term | Definition |
|---|---|
| homologous structures | Structures found in multiple species that are the same, because they came from a common ancestor. (example: all mammals have mammary glands, or a bat wing, human arm, and a dog foot all have the same bones, just used a little differently.) |
| analogous structures | Similar body structures can be found in various populations, but these populations are not from a common ancestor. they are similar because they have to survive a similar environment. |
| embryo development (ontogeny) | species that have similar embryos will be more closely related on the tree of life |
| natural selection | When Nature stresses out a population, the individuals that are strongest and survive will stay alive and breed. So nature chooses the next generation. |
| artificial selection | man likes certain traits in dogs, cows, horses...so he continues to breed traits that he chooses. So man chooses the next generation. |
| selective breeding | when man selects the traits he wants to breed into a population |
| adaptation | changing of genes or behaviors that are passed to the next generation that help them survive better than those without the trait. |
| part 1 of natural selection | There is variation in a population (what part of Natural Selection is this?) |
| part 2 of natural selection | Some variations are favorable (what part of NS is this?) |
| part 3 of natural selection | Not all young live to survive (what part of NS is this?) |
| part 4 of natural selection | Those young that do survive will pass that favorable variation onto the next generation. (What part of NS is this?) |
| Charles Darwin | Who wrote The Origin of Species? |
| Bonnett | Who is the father of Evolution |
| survival of the fittest | Only the strongest of a species survive in this world to be able to mate and reproduce. Why is this? |
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NJHS Life Science
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