Evolution Terms Flashcards

1
Q

Reproductively isolated

A

Species

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2
Q

What are the three genetic factors within a species

A
  1. Nonviable (offspring die)
  2. (Infertile) offspring are unable to reproduce
  3. Behavioral, geographical, and physical
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3
Q

Another name for breeding

A

Artificial selection

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4
Q

The study of similar characteristics between organisms

A

Homology

This is what made Darwin think that all organism were from a similar ansestor

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5
Q

If you look back at bones of ancient organisms, there are more similarities than there are between bones today

A

Fossil record

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6
Q

What did scientist LaMarck believe?

A

Changes you made to yourself during your lifetime are passed on to offspring

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7
Q

It is passed on through populations, not through individuals

A

Adaptation

Like the finch beaks

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8
Q

How a population changes over time

A

Natural selection

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9
Q

What are the five components of natural selection?

A
  1. More offspring born than survive?
  2. Not all the offspring are the same (variation)
  3. Some traits helps an organism survive and the same treat helps another organism die
  4. Different survivability
  5. Different reproduction changes (Gene frequency)
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10
Q

what favors traits best suitable for a specific environment?

A

Natural selection

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11
Q

What are the two ways variation occurs?

A
  1. Genetic randomness/combinations

2. Mutations

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12
Q

What is evolution?

A

Changes in gene frequency

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13
Q

When does genetic randomness occur (2 occasions)

A

a) meiosis- different gamete combos

b) prophase 1 of meiosis (crossing over and shuffling)

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14
Q

What are the four ways of mutation?

A

Inversion, duplication, deletion, translocation

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15
Q

What is it called when the species spread out to different environments and the environment selects which trait is best suitable (dominant traits)

A

Adaptive radiation

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16
Q

When 2 different species become very similar because they share an environment

(If the environment changes, the organisms adapt similarly)

A

Convergence

17
Q

Over time one species ends up in two different locations and become more different

A

Divergence

18
Q

Where two similar species in the same environment share similar changes at the same time

A

Parallel evolution

19
Q

Where one species changes because another species changes

A

Co evolution

20
Q

Adaptation happens….

A

With a population over a long time period

21
Q

Natural selection is how Darwin proposed…

A

That there could be changes like adaptation

22
Q

In the fossil record, there tend to be long periods of ball ands, and the suddenly, lots of change

A

Punctuated equilibrium

23
Q

There weren’t many animals on earth the suddenly lots of different species showed up

A

Cambodian explosion

24
Q

How evolution happens

A

Evolution mechanism

25
Q

How does evolution occur?

A

Breeding and natural selection

26
Q

Evolution happens through…

A

Mutations, migration, genetic drift

27
Q

Where the gene pool is moved

Random change in gene pool over time

A

Genetic drift

28
Q

The recombination of allele Paris in an individual changes the gene pool

A

Genetic recombination