Evolution Flashcards

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1
Q

Facts

A

Observed or measured data that helps explain something

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2
Q

Theory

A

Interpretation of facts that has been repeatedly supported

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3
Q

Law

A

Explains how something happens using mathematical equations

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4
Q

Evolution

A

The process of change overtime
Specifically, a change in the frequency of alleles in a population over time

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5
Q

Charles Darwin

A

Father of Evolution
Proposed a mechanism for evolution: natural selection
Wrote Book: On the Origin of Species

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6
Q

Natural selections

A

Organisms that are best adapted to an environment survive and reproduce more than others

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7
Q

What are the two ideas about evolution?

A

Descent with modification, Common descent

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8
Q

Descent with modification

A

each living species has descended, with changes, from other species over time

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9
Q

Common descent

A

all living organisms are related to one another and came from one common ancestor

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10
Q

What evidence is there for evolution?

A

The fossil record, homologous body structures, vestigial structures, embryology, biochemistry

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11
Q

Structural adaptations

A

Changes to the physical features of the organism

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12
Q

Behavioral adaptions

A

Learned behaviors that help organisms to survive

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13
Q

Physiological adaptations

A

Automatic responses an organism’s body has to something

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14
Q

Divergent evolution

A

The process in which species that were once similar become dissimilar and results in a new species
Ex. Monkey, whale, pig, bird

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15
Q

Convergent Evolution

A

The process in which two distinct lineages evolve a similar characteristic of a different species
Ex. Shark, dolphin

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16
Q

Bottleneck

A

Occurs when a population declines to a low point, then rebounds
Example: Cheetah populations

17
Q

Species

A

A group of closely related organisms that interbreed in nature and have the possibility of producing fertile offspring

18
Q

Hybrid

A

The offspring of 2 different species (infertile)
Ex. Mule, Liger

19
Q

Speciation

A

The evolution of a new species

20
Q

Allopatric Speciation

A

A physical barrier divides one population into two or more populations leading to new species

21
Q

Sympatric Speciation

A

A species evolves into a new species without a physical barrier, and live side by side through the process

22
Q

Mimicry

A

An adaption in which an organism imitates another animal, plant, or objects in its environment
Ex. Eastern coral snake, scarlet king snake

23
Q

Camouflage

A

An adaptation in which an organism blends in with their environment
Ex. Gecko

24
Q

Hardy-Weinberg Principle

A

Allele and genotype frequencies in a population will remain the same generation to generation