Evolution Flashcards

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1
Q

What Scientist came up with the theory of evolution?

A

Charles Darwin

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2
Q

What was Darwins Theory called?

A

evolution by natural selection

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3
Q

What was Darwin’s early understandings of Species?

A

Species show wide variation in their characteristics (phenotypic variation). Organisms compete for limited resources

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4
Q

What was Darwin’s conclusion Evolution (competition)?

A

Organisms with the most suitable characteristics for the environment are more successful competitors. (More likely to survive) ‘Survival of the fittest’

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5
Q

What is Evolution?

A

All of today’s species have evolved from simple life forms that first started to develop over three billion years ago.

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6
Q

What is the development of new species called?

A

Speciation

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7
Q

What is Speciation?

A

The phenotype of organisms change so much over time because of natural selection, a new species is formed

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8
Q

When does Speciation happen?

A

When populations same species change to become reproductively isolated. This means they can’t interbreed

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9
Q

Species can become extinct for what five reasons?

A
  1. Environment changes
  2. New Predator
  3. New Disease
  4. can’t compete for food
  5. catastrophic event
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