Final Jeopardy
Post on 07-Jan-2016
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Darwin & Lamarck
Evidence 1 Evidence 2Models of Evolution
Vocabulary Stuff
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Final Jeopardy
How does the movement of new individuals into a population help bring about rapid
evolution?
• They must compete for food and shelter with other living things. This competition causes species to either die out or evolve.
*This seems like Natural Selection to me!
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Survive and Reproduce
Charles Darwin knew that organisms had traits and
behaviors that allowed them to do what?
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A single species or common ancestor
Darwin Argued that all existing species originated
from what?
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Adapting to their environments
Darwin thought that evolution was the result of
organisms doing what?
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A species with adaptations that are well suited to its environment will survive better
and have more offspring.
Describe Natural Selection
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Acquired traits are handed down from one generation to the next. Like scars and
tatooes.
What was Larmarck’s Theory of Evolution
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Fossil Records, bacteria evolving to fight medicine, and plants being breed into new
plants.
Give an example of direct evidence of evolution?
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Embryology
Homologous structures
Vestigial Structures
What are 3 indirect types of evidence of evolution?
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Appendix
Wisdom Teeth
Ear wiggling muscles
What is an example of a vestigial structure in humans?
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Embryos of different organisms are the same at early stages of development. This suggest they have come from a common
ancestor
How is embryology evidence of evolution?
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They show that changes have occurred within organisms, show that organisms have a common ancestor, shows that
enough time has passed for evolution to occur
Why are fossils direct evidence of evolution?
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Homologous structures show that organisms have a recent common ancestor
Why are homologous structures used as evidence of
evolution?
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They are structures that no longer have a function
What is a vestigial structure?
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Body parts that have a similar structure but have different functions
What are homologous Structures?
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Variations are differences in a species that can be good or bad. An adaptation is a
variation that is good and helps an oganism survive and reprodice.
How are variations different from adaptations?
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It takes time for evolution to occur. Over thousands or millions of years structures get
smaller, shut off, then dissapear.
Why do some vestigial structures still exist?
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Gradual and Punctuated Equilibrium
What are two models of evolution?
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Punctuated Equilibrium
If you found many different fossils for a species in just a few million years what type of evolution would this be?
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A species is in a state of equilibrium for an extended period of time followed by a brief and rapid period of change that produces a
new species
Explain Punctuated Equilibrium
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It is a model of evolution that is based on slow and steady changes
What is gradualism?
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It is the permanent disappearance of a species
What is extinction?
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Variations
What is the difference in inherited traits of an organism
that may lead to a new species?
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Species
Similar organisms whose members can successfully
reproduce.
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Relative Dating
Method used to estimate the age of a fossil.
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Opposable thumbs, binocular vision, and flexible shoulders.
List three characteristics of primate.
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Hominids had larger brains.
What separates hominids from apes?
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Homo habilis
Other than Mr. T… who was handy?
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Cro-Magnon
Who was artsy?
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Sudden changes in the DNA of an organism, or an organism finding itself
geographically isolated from the rest of its popluation.
Name two events that can cause evolution to occur.
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Neanderthals
Who were the real cavemen? Stone tools and all!
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Not all dead things become fossil. Not all fossils have been found.
Give two reasons why the fossil record might be
incomplete?
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