Evolution (2) Flashcards

(27 cards)

1
Q

Published On the Origin of Species…

A

Charles Darwin

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2
Q

Father of Evolution

A

charles darwin

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3
Q

Darwin’s thoughts on Natural Selection

A

Darwin’s thoughts on Natural Selection explained a lot about evolution, but he didn’t explain the mechanism by which traits change over time.

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4
Q

Theories of Evolution

A

Overproduction
Competition
Variations and Adaptations
Natural Selection
Speciation

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5
Q

Most species produce far more offspring than can survive. Those that die are considered ‘weak’

A

overproduction

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6
Q

Since living space and food are limited (limited resources), offspring must compete for resources

A

Competition

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7
Q

characteristics of the individuals in any species are not exactly alike

A

Variations & Adaptations

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8
Q

Organisms with variations that make them better adapted to their environment survive and reproduce
passing on favorable traits to offspring

A

natural selection

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9
Q

Over many generations, favorable adaptations gradually accumulate in the species and bad traits disappear.

A

speciation

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10
Q

sources of genetic variation

A

mutation
genetic recombination
migration
genetic drift

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11
Q

Random changes in the genetic makeup of an organism

A

mutations

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12
Q

Gametes uniting during fertilization

A

genetic recombination

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13
Q

New traits being brought into / taking out traits out of a population

A

migration

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14
Q

has greatest effect on small populations

A

migration

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15
Q

Affects small populations
changes in the gene pool due to storms, a catastrophe, etc.

A

genetic drift

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16
Q

tends to decrease gene pool

A

genetic drift

17
Q

Focuses on population than individual

A

The Modern Theory of Evolution

18
Q

study of changes in genetic makeup of populations.

A

population genetics

19
Q

how often a particular allele (trait) is found within a population.

20
Q

total of all alleles present in a population.
Mathematically explained by Hardy Weinberg.

21
Q

peppered moth’s signifance

A

shows how environmental factors can drive natural selection

22
Q

adaptations

A

structural
physiological

23
Q

Involves parts of body (wings for flying, fins for swimming).

A

structural adaptations

24
Q

Involves metabolism of organism (poison venom).
Other adaptations are mating, behavioral, hibernation, etc.

A

physiological adaptations

25
The emergence of many species from a common ancestor that was introduced to new environment
adaptive radiation
26
Natural selection causes non- related species to resemble one another wings in birds, bats, insects echolocation in dolphins & bats thorns in cacti & roses shark & dolphin bodies vertebrate & cephalopod eyes
convergent evolution
27
Two+ species evolve in response to each other through competitive or cooperative adaptations predator-prey interactions host-parasite interactions plants & fungi / bacteria flowers and their pollinators.
coevolution