Evolution Flashcards

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0
Q

Members if each species compete to obtain food living space and necessities of life

A

Struggle for existence

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1
Q

Change in a kind of organism

A

Evolution

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2
Q

Ability of an individual to survive in reproduce in its environment

A

Fitness

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3
Q

Any inherited characteristics that increases and organisms chance of survival

A

Adaptation

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4
Q

Process by which individuals that are better suited to their environment survive and reproduce most successfully; otherwise known as natural selection

A

Survival of the fittest

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5
Q

Principle that each living species has descended with changes from other species overtime

A

Descent with modification

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6
Q

All things are derived from common ancestors

A

Common descent

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7
Q

Structures that have different mature forms the different organisms but develop from the same embryonic tissues

A

Homologous structures

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8
Q

Structures with similar functions that did not come from sharing a common ancestor, but from sharing a similar environment

A

Analogous structures

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9
Q

A organ that serves no useful function in an organism

A

Vestigial organ

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10
Q

Combined genetic information of all the members of a particular population

A

Gene pool

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11
Q

Form of natural selection in which the entire curve moves; occurs when individuals at one end of the distribution curve have higher fitness than individuals in the middle or at the other end of the curb

A

Directional selection

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12
Q

The type of selection which occurs when individuals near the center of the curve are favored

A

Stabilizing selection

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13
Q

Form of natural selection in which a single curves with into two; occurs when individuals at the upper and lower inns up a normal distribution curve have higher fitness than those need the center of the curve

A

Disruptive selection

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14
Q

A random change in allele frequencies that occurs in small populations

A

Genetic drift

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15
Q

Situation in which allele frequencies remain constant

A

Genetic equilibrium

16
Q

Separation of species or population so that they cannot interbreed and produce fertile offspring

A

Reproductive isolation

17
Q

Form of reproduction isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding

A

Behavioral isolation

18
Q

Form of reproductive isolation in which two populations are separated physically by geographic areas such as rivers mountains or stretches of water

A

Geographic isolation

19
Q

Form of reproductive isolation in which two populations reproduce at different times

A

Temporel isolation

20
Q

Information about past life, including the structure of organisms, what the eight, what ate them, in what environment they lived, in the order in which they lived

A

Fossil record

21
Q

Method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock

A

Relative dating

22
Q

A recognizable fossil other an organism that lived for short period of time, but over a wide geographic range; used to compare the relative ages of fossils

A

Index fossils

23
Q

Length of time for half of the radioactive Adams in a sample to decay

A

Half life

24
Q

Using the half-life of an isotope to find the absolute age of a fossil

A

Radioactive dating

25
Q

When multiple species permanently die out during the same time frame

A

Mass extinction

26
Q

Process by which a single species or small group of species evolves into several different forms that live in different ways; rapid growth in the diversity of a group of organisms

A

Adaptive radiation

27
Q

Process by which unrelated organisms independently evolve similarities when adapting to similar environments

A

Convergent evolution

28
Q

Process by which two species evolve in response to changes in each other

A

Convolution

29
Q

A pattern of evolution where Long staple periods are interrupted by brief periods of rapid change

A

Punctuated equilibrium

30
Q

Diagram that shows the evolutionary relationships among a group of organisms

A

Cladogram

31
Q

A key used in the identification of organisms based on a series of choices between alternative characters

A

Dichotomous key