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Biology, Evolution > Evolution Basics > Flashcards

Evolution Basics Flashcards

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1
Q

What do you learn by studying fossils? ( Beginning of Text Book)

A
  • Learn Ancient forms

- Evolution

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2
Q

Define Evolution

A

A gradual change in the development of something

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3
Q

Define Biological Evolution

A

The change in the gene pool of a population over the course of time AS A RESULT OF GENETIC DRIFT, MUTATIONS AND NATURAL SELECTION

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4
Q

Other word for biological evolution

A

modification with descent

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5
Q

what does modification with descent mean?

A

It means that species develop from a common ancestor

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6
Q

what does modification with descent cover

A

covers microevolution and macroevolution

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7
Q

What is macroevolution

A

evolution of different species from common ancestor

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8
Q

what is microevolution

A

evolution within species

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9
Q

How did life originate?

A

Life originated from a single origin of life which explains why all organisms have same genetic code and similar enzymes

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10
Q

What was the belief before 1700’s

A
  • Earth was young

- species were unrelated and remained unchanged

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11
Q

what did Darwin, Lamarck and Wallace have in common

A
  • Earth was old

- Species changed over time

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12
Q

What did Erasmus Darwin do?

A

Put forward the idea of a common ancestor and claimed species changed overtime

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13
Q

Jean Baptiste Lamarck observations

A
  • species are different to fossils

- cross pollination leads to new characteristics

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14
Q

Define Lamarckasism and why was it wrong

A

Belief that species adapted to environment and passed characteristics down to offspring but he was wrong

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15
Q

Charles Darwin observation

A
  • diversity amongst species
  • variation amongst species
  • distribution of species
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16
Q

Most Important observation

A
  • Modification with descent ( Species evolved from a common ancestor)
  • Natural Selection ( Environment selects the best adapted to survive and reproduce)

Extinction

17
Q

Expand on Darwins Modification with Descent?

A
  • All organisms came from a common ancestor, however, ancestral species moved into different habitats.
  • Adapted to local conditions and modified into new species
  • Species died out
18
Q

Alfred Wallace

A

Collected wildlife and found the ILLOGICAL DISTRIBUTION OF SPECIES.

19
Q

Wallace Observation

A

Ancestors of modern species became isolated from eachother by water and evolved differently

Biology, Evolution (7 decks)

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