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Unit 4 Bio Evolution

Boise Curriculum regarding species and how gene frequencies change over time

TermDefinition
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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