Evolution Flashcards

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1
Q

What is evolution?

A

change in frequency of traits in a population over time and organisms came from pre-existing organisms

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2
Q

What is Lamarck’s Theory of Acquired Characteristics?

A

he thought that you would gain or lose features if you overused or didn’t use them

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3
Q

What was Charles Lyell known for?

A

from his observations, he is given credit for the general acceptance that all features of the Earth’s surface are gradually affected by chemical, physical, and biological processes

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4
Q

Main points of “The Origin of Species” by Darwin:

A
  1. Species produce more offspring than can survive
  2. Individuals compete for resources or mates
  3. Those with the best traits produce the most
    offspring (which will also have those traits)
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5
Q

What is Natural Selection?

A
  1. Variation
  2. Inheritance
  3. Differential Survival
  4. Adaptation
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6
Q

Evidence for Evolution:

A
  1. Fossils
  2. Homologous structures
  3. Vestigial organs
  4. DNA
  5. Embryos
  6. Direct Observation
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7
Q

What is speciation?

A

the formation of a new species

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8
Q

What is a species?

A

group that can interbreed, produce fertile offspring

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9
Q

What is adaptive radiation?

A

one species becomes many species

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10
Q

What does a phylogenetic tree show?

A

shows how species are related

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